| IAS | Identifizierung, Authentifizierung, Signierung | In German | → Telecommunications |
| IAS | Institut für Angewandte Systemtechnik | In German | |
| IB | Institut für Bodenforschung (www.boku.ac.at/boden/) | In German | → Research institutes → Agricultural sciences |
| IBB | Internationales Bankhaus Bodensee | In German | → Banks |
| IBB | Institut für Berufliche Bildung | In German | → Education → Labour, labour economics |
| IBB | Internationales Bildungs- und Begegnungswerk | In German | |
| IBB | Institut für Betonbau | In German | → Building |
| IBB | Institut für Bildungsrecht und Bildungspolitik | In German | → Law, jurisprudence → Education |
| IBB | Investitionsbank Berlin | In German | → Banks |
| IBB | Institut für Bildung und Beratung | In German | → Education |
| IBF | Institut für Bauschadensforschung | In German | → Building |
| IBLB | Institut für Ingenieurbiologie und Landschaftsbau | In German | |
| IBMG | Internationales Büro für Maß und Gewicht (www.bipm.org) = BIPM | Bureau International des Poids et Mesures | In French = BIPM | Bureau Internacional de Pesos e Medidas | In Portuguese = BIPM | Buroo Internacia pri Pezoj kaj Mezuroj | In Esperanto |
In German | → Standardization |
| IBN | Institut für Biophysik und Nanosystemforschung | In German | → Biochemistry, biophysics → Biotechnology |
| IBO | Österreichisches Institut für Baubiologie und -ökologie | In German | → Building |
| IBR | Institut für Biophysik und Röntgenstrukturforschung | In German | → Biological sciences → Biochemistry, biophysics |
| IBT | Internationaler Bund der Tierversuchsgegner (www.tierversuchsgegner.at) | In German | → Organizations and associations → Nature → Pharmacology, toxicology |
| IDEM | Informations- und Dokumentationsstelle Ethik in der Medizin | In German | → Libraries → Ethics → Medicine |
| IDM | Internationale Deutsche Motorradmeisterschaft | In German | |
| IDM | Institut für den Donauraum und Mitteleuropa | In German | → Research institutes → International relations → Area studies |
| IDW | Informationsdienst Wissenschaft | In German | → Libraries → Mathematics and natural sciences |
| IEA | Internationale Energieagentur = AIE | Agence Internationale de l'Énergie | In French = IEA | International Energy Agency | In English = МЭА | Международное энергетическое агентство | In Russian = MAE | Międzynarodowa Agencja Energii[edytuj] | In Polish = IEA | Internationaal Energie Agentschap | In Dutch = IEA | 国際エネルギー機関 | In Japanese = AIE | Agencia Internacional de la Energía | In Spanish |
In German | → International relations → Energy economics |
| IEE | Intelligente Energie Europa = IEE | Intelligent Energy Europe | In English |
In German | → Energy economics |
| IEE | Institut für Elektrische Energietechnik | In German | → Electrical engineering |
| IEE | Institut für Entwicklungsforschung und Entwicklungspolitik | In German | → International relations |
| IEE | Institut für Grundlagen der Elektrotechnik und Elektronik | In German | → Electrical engineering → Electronics |
| IEEkQ | Institut zur Erforschung und Erschließung kirchlicher Quellen | In German | → Roman catholic church |
| IEF | Institut für Ehe- und Familientherapie | In German | → Psychology |
| IEMW | Institut für Industrielle Elektronik und Materialwissenschaften | In German | → 620 → Electronics |
| IER | Internationale Elektronische Rundschau | In German | → Serial publications, periodicals → Electronics |
| IES | Information und Einsatz im Sanitätsdienst | In German | → Medicine |
| IF | Indogermanische Forschungen | In German | → Language, linguistics, literature → Geography, biography, history |
| IFA | Institut für Asienkunde | In German | → Area studies |
| IFBS | Institut zur Förderung von Brandschutz und Sicherheit | In German | → Artistic property |
| IFEU | Institut für Energie und Umweltforschung | In German | → Energy economics |
| IFIG | Internationales Forschungs- und Informationszentrum für öffentliche Wirtschaft, Sozialwirtschaft und Genossenschaftswesen = CIRIEC | Centre International de Recherches et d'Information sur l'Économie Publique, Sociale et Coopérative | In French |
In German | → Organizations and associations → Economics |
| IFK | Internationales Forschungszentrum Kulturwissenschaften (www.ifk.ac.at) | In German | → Research institutes → Civilization, culture, progress |
| IFM | Internationales Forum Mechatronik | In German | → Mechanical engineering → Electronics |
| IFSH | Institut für Friedensforschung und Sicherheitspolitik | In German | → Research institutes → Polemology |
| IfT | Institut für Troposphärenforschung | In German | → Meteorology, climatology |
| IFU | Institut für Unternehmensführung | In German | |
| IGDD | Internationale Gesellschaft für Dialektologie des Deutschen | In German | → Organizations and associations → Language, linguistics, literature |
| IGEPA | Internationale Gewerkschaft im Europäischen Patentamt | In German | → Labour, labour economics → Industrial property |
| IGF | Industrielle Gemeinschaftsforschung | In German | → Research policy → Engineering, technology |
| IGGoÖ | Islamische Glaubensgemeinschaft in Österreich | In German | → Islam |
| IGH | Internationaler Gerichtshof (www.icj-cij.org) = CIJ | Cour Internationale de Justice | In French = CIJ | Corte Internacional de Justicia | In Spanish = ICJ | International Court of Justice | In English = CIJ | Corte Internacional de Justiça | In Portuguese = CIJ | Cort Internacional de Justícia | In Catalan = MSD | Mezinárodní soudní dvůr | In Czech = ΔΔΔ | Διεθνές Δικαστήριο της Δικαιοσύνης | In Greek = IK | Internacia Kortumo | In Esperanto = ICJ | 국제사법재판소 | In Korean = TTT | Tarptautinis Teisingumo Teismas | In Lithuanian = MTS | Międzynarodowy Trybunał Sprawiedliwości | In Polish = MSD | Medzinárodný súdny dvor | In Slovak = МСП | Међународни суд правде | In Serbian = MSP | Međunarodni sud pravde | In Serbo-Croatian |
In German | → International relations → Law, jurisprudence |
| IGOR | Institut für Gewebe- und Organrekonstruktion (www.igor.at) | In German | → Research institutes → Biotechnology → Medicine |
| IGOST | Interdisziplinäre Gesellschaft für Orthopädische Schmerztherapie | In German | → Organizations and associations → Surgery, orthopaedics, ophthalmology |
| IGRW | Interessengemeinschaft Regenwassernutzung | In German | |
| IGS | Ingenieur-Geometer Schweiz = IGS | Ingénieurs-Géomètres Suisses | In French |
In German | → Organizations and associations → Applied sciences, technology |
| IGV | Institut für Getreideverarbeitung | In German | → Agricultural sciences |
| IHF | Internationale Helsinki-Föderation für Menschenrechte (www.ihf-hr.org) = IHF | International Helsinki Federation for Human Rights | In English = IHF-HR | International Helsinki Federation for Human Rights | In English = МХФ | Международная хельсинская федерация по правам человека | In Russian |
In German | → Organizations and associations → Fundamental rights |
| IHK | Industrie- und Handelskammer | In German | → Organizations and associations → Trade |
| IHS | Institut für Höhere Studien | In German | |
| IHV | Internationaler Hunde Verein (www.ihv-online.de) | In German | → Organizations and associations |
| IHV | Industrie- und Handelsvereinigung | In German | → Organizations and associations → Industry, industrial policy → Trade |
| IHV | Innerschweizer Handballverband (www.ihv.ch) | In German | → Organizations and associations → Sport, physical exercises |
| IHV | Islamische Hochschulvereinigung | In German | → Islam → Higher education, universities |
| IIA | Interinstitutionelles Abkommen | In German | |
| IIASA | Internationales Institut für Angewandte Systemanalyse | In German | |
| IIAW | Institut für Asien- und Afrikawissenschaften | In German | → Area studies |
| IJZ | Internationales Journalismus Zentrum | In German | → Newspapers, journalism |
| IKMA | Industrielles Kompetenzzentrum für Mechatronik und Automation | In German | → Mechanical engineering |
| IKT | Informations- und Kommunikationstechnologie = TIC | Tecnologías de la Información y la Comunicación | In Spanish = TIC | Technologies de l'Information et de la Communication | In French = ICT | Information and Communications Technology | In English = IKT | Informations- og kommunikationsteknologi | In Danish = IKT | Inligtings- en kommunikasietegnologie | In Afrikaans = ICT | Informatie- en Communicatietechnologie | In Dutch = TMK | Teknologi Maklumat dan Komunikasi | In Malay |
In German | → Computer science → Telecommunications |
| ILA | Institut für Luftfahrtantriebe | In German | → Aeronautics, aircraft |
| ILM | Institut für Laboratoriumsmedizin, Klinische Chemie und Molekulare Diagnostik | In German | → Research institutes → Biochemistry, biophysics → Pharmacology, toxicology → 6160 |
| ILM | Internationales Logistikmanagement | In German | → Maintenance and logistics |
| IMA | Information, Medien, Agrar | In German | → Newspapers, journalism → Agricultural sciences |
| IMC | Institut für Materialchemie | In German | → Chemistry |
| IMP | Institut für Meteorologie und Physik | In German | → Physics → Meteorology, climatology |
| INDUS | Individualisiertes, Dynamisches Unwettersystem | In German | → Meteorology, climatology |
| IngAr | Ingenieur Archiv | In German | → Serial publications, periodicals → Engineering, technology |
| InGe-St | Initiative Gehirnforschung Steiermark | In German | |
| IOK | Internationales Olympisches Komitee (www.olympic.org) = CIO | Comité International Olympique | In French = IOC | International Olympic Committee | In English = МОК | Международен олимпийски комитет | In Bulgarian = MOO | Međunarodni olimpijski odbor | In Bosnian = COI | Comitè Olímpic Internacional | In Catalan = MOV | Mezinárodní olympijský výbor | In Czech = ΔΟΕ | Διεθνής Ολυμπιακή Επιτροπή | In Greek = IOK | Internacia Olimpika Komitato | In Esperanto = COI | Comité Olímpico Internacional | In Spanish = ROK | Rahvusvaheline Olümpiakomitee | In Estonian = KOK | Kansainvälinen olympiakomitea | In Finnish = COI | Comité Olímpico Internacional | In Galician = MOO | Međunarodni olimpijski odbor | In Croatian = NOB | Nemzetközi Olimpiai Bizottság | In Hungarian = TOK | Tarptautinis olimpinis komitetas | In Lithuanian = IOC | Internationaal Olympisch Comité | In Dutch = IOK | (Den) internasjonale olympiske komité | In Norwegian = MKOI | Międzynarodowy Komitet Olimpijski | In Polish = COI | Comité Olímpico Internacional | In Portuguese = МОК | Международный олимпийский комитет | In Russian = MOK | Međunarodni olimpijski komitet | In Serbo-Croatian = MOV | Medzinárodný olympijský výbor | In Slovak = MOK | Mednarodni olimpijski komite | In Slovenian = МОК | Међународни олимпијски комитет | In Serbian = IOK | Internationella Olympiska Kommitté | In Swedish = МОК | Міжнародний олімпійський комітет | In Ukrainian |
In German | → Organizations and associations → Sport, physical exercises |
| IOT | Individuum Organisation Technologie | In German | → Computer science → 659 |
| IOT | Institut für Oberflächentechnik | In German | → Engineering, technology |
| IPA | Interparlamentarische Arbeitsgemeinschaft | In German | → Associations → Parliaments, representation |
| IPA | Internationales Phonetisches Alphabet = AFI | Alfabetul Fonetic Internaţional | In Romanian = LFE | Lizherenneg Fonetikel Etrebroadel | In Breton = МФА | Международната фонетична азбука | In Bulgarian = IPA | Internationales Phonetisches Alphabet | ALS = AFI | Alfabet fonètic internacional | In Catalan = IFA | Internacia Fonetika Alfabeto | In Esperanto = IPA | International Phonetic Alphabet | In English = ΔΦΑ | Διεθνές Φωνητικό Αλφάβητο | In Greek = API | Alphabet Phonétique International | In French = AFI | Alfabeto Fonético Internacional | In Spanish = AFI | Alfabeto Fonético Internacional | In Galician = NAF | Nazioarteko Alfabeto Fonetikoa | In Basque = IPA | Internationalt Phonetescht Alphabet | In Letzeburgesh = AFI | Alfabeto Fonetico Internazionale | In Italian = МФА | Международный фонетический алфавит | In Russian = AFI | Alfabeto Fonético Internacional | In Portuguese = AFI | Alfabet fonetic internacionau | In Occitan = AFE | Alfabet Fonetike Eternåcionå | In Walloon = IFA | Internationoal Fonetisch Alfabet | VLS = AFN | Alfabeti Fonetik Ndërkombëtar | SQ |
In German | → Writing systems |
| IPA | Internet Privatstiftung Austria | In German | → Foundations → Networks, communication → Telecommunications |
| IPA | Fraunhofer-Institut für Produktionstechnik und Automatisierung | In German | → Research institutes → Engineering, technology |
| IPC | Institut für Physikalische Chemie | In German | → Physics → Chemistry |
| IPK | Institut für Produktionsanlagen und Konstruktionstechnik (www.ipk.fraunhofer.de) | In German | → Research institutes → Building |
| IPN | Institut für Biophysik und Nanosystemforschung | In German | → Research institutes → Biochemistry, biophysics |
| IPPS | Internationaler-Prostate-Symptom-Score | In German | → Pathology |
| IQOQI | Institut für Quantenoptik und Quantenkommunikation | In German | → Physics |
| IRAS | Interreligiöse Arbeitsgemeinschaft in der Schweiz | In German | → Associations → Religion, theology |
| IRF | Interreligiöses Forum Basel | In German | → Religion, theology |
| IRKS | Institut für Rechts- und Kriminalsoziologie | In German | → Sociology → Law, jurisprudence |
| IRT | Institut für Rundfunktechnik (www.irt.de) | In German | → Research institutes → Telecommunications |
| ISAS | Institut für Sensor- und Aktuatorsysteme | In German | → Electronics |
| ISBS | Internationales Symposium für Biomechanik im Sport | In German | → Congresses → Biological sciences → Sport, physical exercises |
| ISET | Institut für Solare Energieversorgungstechnik | In German | → Energy economics |
| ISETEC | Innovative Seehafentechnologien | In German | → 627 |
| ISIR | Institut für Statistik und internationale Registrierungen | In German | → Research institutes → Statistics |
| ISIS | Institut für Softwartechnik und Interaktive Systeme | In German | |
| ISS | Industrielle Sensorsysteme | In German | → Electronics |
| ISST | Institut für Software- und Systemtechnik = ISST | Institute for Software and Systems | In English |
In German | → Software |
| ISST | Institut für Stimm- und Sprachtherapie | In German | → Pathology |
| IT | Informationstechnik = IT | Information Technology | In English = IT | Inligtingstegnologie | In Afrikaans = TI | Tecnologia da Informação | In Portuguese = TI | Tecnoloxías da información | In Galician |
In German | → Computer science → Telecommunications |
| ITA | Institut für Technikfolgenabschätzung | In German | |
| ITA | Institut für Technikfolgen-Abschätzung | In German | → Applied sciences, technology |
| ITAS | Institut für Technikfolgenabschätzung und Systemanalyse | In German | → Engineering, technology |
| ITG | Innovations- und Technologietransfer Salzburg GmbH (www.itg-salzburg.at) | In German | → Engineering, technology |
| ITI | Internationales Theologisches Institut | In German | → Religion, theology |
| ITU | Institut für Transurane | In German | → Research institutes → Nuclear, atomic, and molecular physics → Nuclear technology |
| IUT | Institut für Umwelttechnik | In German | → Agricultural sciences → Nature → Environment, environmental sciences |
| IV | Industriellenvereinigung (www.iv-net.at) | In German | → Organizations and associations → Industry, industrial policy |
| IVG | Internationale Vereinigung für Germanistik | In German | → Organizations and associations → Language, linguistics, literature |
| IVK | Institut für Verbrennungskraftmaschinen und Kraftfahrzeugbau (www.ivk.tuwien.ac.at) | In German | → Research institutes → Mechanical engineering → Vehicle engineering |
| IVV | (Fraunhofer-)Institut für Verfahrenstechnik und Verpackung | In German | |
| IVV | Ingenieurgesellschaft für Verkehrsplanung und Verkehrssicherung | In German | → Transport and postal services |
| IWF | Institut für Weltraumforschung (www.iwf.oeaw.ac.at) | In German | → Research institutes → Astronomy → Spaceflight engineering, astronautics |
| IWI | Industriewissenschaftliches Institut | In German | → Research institutes → Industry, industrial policy → Engineering, technology |
| IWM | Institut für die Wissenschaften vom Menschen (www.iwm.at) | In German | → Research institutes → Social sciences |
| IWU | Institut Wohnen und Umwelt | In German | → Building |
| IZA | Innsbrucker Zeitungsarchiv | In German | → Newspapers, journalism |
| IZES | Institut für ZukunftsEnergieSysteme | In German | → Energy economics |
| IZEW | Interfakultäres Zentrum für Ethik in den Wissenschaften (www.izew.uni-tuebingen.de) | In German | → Ethics → Mathematics and natural sciences |
| IZT | Institut für Zukunftsstudien und Technologiebewertung (www.izt.de) | In German | → Research institutes → Research policy → Engineering, technology |
| JAE | Jahresarbeitsentgeltgrenze | In German | → Labour, labour economics |
| JbLA | Jahrbuch für Geschichte von Staat, Wirtschaft und Gesellschaft Lateinamerikas | In German | → Serial publications, periodicals → Area studies |
| JbRGZM | Jahrbuch des römisch-germanische Zentralmuseen | In German | → Serial publications, periodicals → Museums |
| JFW | Jüdische Filmwoche | In German | → Cinema, movies |
| JOINTS | Joanneum Research - Institut für Nachhaltige Techniken und Systeme | In German | → Nature → Engineering, technology |
| JRE | Jahrbuch der Radioaktivität und Elektronik | In German | → Serial publications, periodicals → Nuclear, atomic, and molecular physics → Electronics |
| JUMP | Japanisches Universität Mannheim | In German | → Higher education, universities |
| JWUDF | Jahns Wöchentliche Unterhaltungen für Dilettanten und Freunde der Astronomie, Geographie und Witterungskunde | In German | → Serial publications, periodicals → Astronomy → Meteorology, climatology → Geography |
| K | Lysin = K | Lysine | In English = K | ليسين | In Arabic = K | লাইসিন | In Bengali = K | Lisina | In Catalan = K | Lysin | In Czech = K | Lisina | In Spanish = K | Lizino | LO = K | Lysine | In French = K | 리신 | In Korean = K | Lizin | In Croatian = K | Lisin | In Indonesian = K | Lisina | In Italian = K | ליזין | In Hebrew = K | Lizīns | In Latvian = K | Lysin | In Letzeburgesh = K | Lizinas | In Lithuanian = K | Lizin | In Hungarian = K | Lysine | In Dutch = K | リシン | In Japanese = K | Lizyna | In Polish = K | Lisina | In Portuguese = K | Лизин | In Russian = K | Lysiini | In Finnish = K | Lizin | In Turkish = K | Лізин | In Ukrainian = K | 赖氨酸 | In Chinese |
In German | → Biochemistry, biophysics |
| KAAD | Katholischer Akademischer Ausländer-Dienst | In German | → Roman catholic church |
| KAI | Kompetenzzentrum für Automobil- und Industrieelektronik | In German | → Electronics → Automobile manufacturing |
| KAI | Kompetenzzentrum Automobil- und Industrieelektronik | In German | → Electronics → Automobile manufacturing |
| KAÖ | Katholische Aktion Österreich | In German | → Organizations and associations → Roman catholic church |
| KAV | Krankenanstaltenverbund | In German | → Public health and hygiene |
| KC | Kunststoff-Cluster | In German | → Plastic industry |
| KEA | Klimaschutz- und Energieagentur | In German | → Meteorology, climatology → Energy economics |
| KERP | Kompetenzzentrums für Elektro(nik)altgeräte-Recycling und nachhaltige Produktentwicklung | In German | → Electronics → Environmental technology, water supply, waste management |
| KfV | Kuratorium fur Verkehrssichereit | In German | → Organizations and associations → Transport and postal services |
| KGKK | Kärntner Gebietskrankenkasse | In German | → Insurance |
| KGU | Kommission Gymnasium-Universität | In German | → Education → Higher education, universities |
| KI | Künstliche Intelligenz = AI | Artificial Intelligence | In English = AI | Artificiële Intelligentie | In Dutch = KI | Kunstmatige Intelligentie | In Dutch = VI | Vještačka inteligencija | In Bosnian = IA | Intelligència artificial | In Catalan = AI | Artefarita Inteligenteco | In Esperanto = IA | Intelligence Artificielle | In French |
In German | → Artificial intelligence |
| KI | Kontaktgruppe Israel | In German | → Religion, theology |
| KIZ | Kriseninterventionszentrum | In German | |
| kjVI | Kreative junge Verfahrensingenieuren | In German | |
| KKR | Kohlberg Kravis Roberts & Co | In German | |
| KKS | Koordinierungszentrum für Klinische Studien | In German | → Veterinary medicine |
| KKT | Kommission für Kulturwissenschaften und Theatergeschichte | In German | → Organizations and associations → Civilization, culture, progress → Theatre |
| KL | Konzentrationslager | In German | → History |
| KlBer | Kleinheubacher Berichte | In German | → Serial publications, periodicals |
| KliBA | Klimaschutz- und Energie-Beratungsagentur | In German | → Meteorology, climatology → Energy economics |
| KLIVV | Konrad Lorenz-Institut für vergleichende Verhaltensforschung | In German | |
| KM | Kirchliche Monatschrift | In German | → Serial publications, periodicals → Christianity |
| KMI | Kommission für Migrations- und Integrationsforschung | In German | → Migrations → Sociology |
| KMS | Kommission für moderne Sprachen | In German | → Education → Language, linguistics, literature |
| KMU | Kleine und Mittlere Unternehmen | In German | → Economics |
| KMV | Kantonaler Mittelschullehrerinnen- und Mittelschullehrer-Verein | In German | → Organizations and associations → Education |
| KOHD | Katalogisierung der Orientalischen Handschriften in Deutschland | In German | → Libraries → Language, linguistics, literature |
| KPC | Kommunalkredit Public Consulting | In German | → Finance |
| KPdSU | Kommunistische Partei der Sowjetunion = PCUS | Parti Communiste de l'Union Soviétique | In French = SKUS | Strollad Komunour an Unaniezh Soviedel | In Breton = KПCC | Коммунистическая партия Советского Союза | In Russian = KПCC | Kommunistitscheskaja Partija Sowjetskogo Sojusa | In Russian = KSSR | Komunistická strana Sovětského svazu | In Czech = KPSU | Komunisma Partio de Soveta Unio | In Esperanto = PCUS | Partito Comunista dell'Unione Sovietica | In Italian = KPSU | Komunisma Partio de Soveta Unio | In Esperanto |
In German | → Political parties and movements |
| KPM | Kometen, Planetoiden, Meteore | In German | → Solar system |
| KPRF | Kommunistische Partei der Russischen Föderation | In German | → Political parties and movements |
| KRGE | Kongreß der Gemeiden und Regionen Europas | In German | → Organizations and associations → Municipal administration |
| KSÖ | Katholische Sozialakademie Österreichs | In German | → Academies → Roman catholic church |
| KSÖ | Kuratorium Sicheres Österreich (www.kuratorium-sicheres-oesterreich.at) | In German | |
| KSV | Kreditschutzverband | In German | |
| KTH | Königlich Technische Hochschule | In German | |
| KTS | Klaus Tschira Stiftung | In German | → Foundations |
| KVeBB | Kleine Veröffentlichungen der Universitätssternwarte zu Berlin Babelsberg | In German | → Serial publications, periodicals → Astronomy |
| KWF | Kärntner Wirtschaftsförderungsfonds | In German | → Economics |
| KWFB | Kommission für Weiter- und Fortbildung = CFPC | Commission pour la Formation Postgraduée et Continue | In French |
In German | → Education |
| KZ | Konzentrationslager | In German | → History |
| L | Leucin = L | Leucine | In English = L | Leucina | In Catalan = L | Leucin | In Danish = L | Leucina | In Spanish = L | Leŭcino | In Esperanto = L | Leucine | In French = L | 류신 | In Korean = L | Leucin | In Croatian = L | Leusin | In Indonesian = L | Leucina | In Italian = L | לאוצין | In Hebrew = L | Leicīns | In Latvian = L | Leucin | In Letzeburgesh = L | Leucinas | In Lithuanian = L | Leucine | In Dutch = L | ロイシン | In Japanese = L | Leucin | In Norwegian = L | Leucyna | In Polish = L | Leucina | In Portuguese = L | Лейцин | In Russian = L | Leusiini | In Finnish = L | Leucin | In Swedish = L | Lösin | In Turkish = L | Лейцин | In Ukrainian = L | 亮氨酸 | In Chinese |
In German | → Biochemistry, biophysics |
| LÄ | Lexicon der Ägyptologie | In German | |
| LAI | (Österreichisches) Lateinamerika-Institut (www.lai.at) | In German | → Research institutes → Area studies |
| LBB | Landesbank Berlin (www.lbb.de) | In German | → Banks |
| LBG | Ludwig-Boltzmann-Gesellschaft | In German | |
| LDVH | Landesdartverband Hamburg | In German | → Organizations and associations → Sport, physical exercises |
| LFR | Leopold Feigenbutz Realschule | In German | → Education |
| LFU | Leopold-Franzens-Universität | In German | → Higher education, universities |
| Li | Lithium = Li | Litium | In Afrikaans = Li | ليثيوم | In Arabic = Li | Litiu | In Asturian = Li | Літый | In Belarusian = Li | Литий | In Bulgarian = Li | লিথিয়াম | In Bengali = Li | Litijum | In Bosnian = Li | Liti | In Catalan = Li | Litiu | In Corsican = Li | Lithium | In Czech = Li | Лити | In Chuvash = Li | Lithiwm | In Welsh = Li | Lithium | In Danish = Li | Λίθιο | In Greek = Li | Lithium | In English = Li | Litio | In Esperanto = Li | Litio | In Spanish = Li | Liitium | In Estonian = Li | Litio | In Basque = Li | لیتیوم | In Persian = Li | Litium | In Finnish = Li | Liti | In Friulian = Li | Litiam | In Irish = Li | Litio | In Galician = Li | ליתיום | In Hebrew = Li | लिथियम | In Hindi = Li | Litij | In Croatian = Li | Lityòm | HT = Li | Lítium | In Hungarian = Li | Լիթիում | In Armenian = Li | Litium | In Indonesian = Li | Litio | In Ido = Li | Litín | In Icelandic = Li | Litio | In Italian = Li | リチウム | In Japanese = Li | roksodna | JBO = Li | ლითიუმი | In Georgian = Li | 리튬 | In Korean = Li | Lithium | KSH = Li | Lîtyûm | In Kurdish = Li | Lithium | In Latin = Li | Lithium | In Letzeburgesh = Li | Litis | In Lithuanian = Li | Litijs | In Latvian = Li | Литиум | In Macedonian = Li | ലിഥിയം | In Malayalam = Li | Litium | In Malay = Li | Lithium | NDS = Li | Lithium | In Dutch = Li | Litium | In Nynorsk = Li | Litium | In Norwegian = Li | Liti | In Occitan = Li | Lit | In Polish = Li | Lítio | In Portuguese = Li | Lityu | In Quechua = Li | Litiu | In Romanian = Li | Литий | In Russian = Li | लिथियम | In Sanskrit = Li | Litij | In Serbo-Croatian = Li | Lítium | In Slovak = Li | Litij | In Slovenian = Li | Litiumi | SQ = Li | Литијум | In Serbian = Li | Litium | In Swedish = Li | Lithi | In Swahili = Li | லித்தியம் | In Tamil = Li | ลิเทียม | In Thai = Li | Lityum | In Turkish = Li | Літій | In Ukrainian = Li | Litiy | In Uzbek = Li | Liti | In Vietnamese = Li | Litiom | In Walloon = Li | ליטיום | In Yiddisch = Li | 锂 | In Chinese |
In German | → Chemistry |
| LIOS | Linzer Institut für Organische Solarzellen = LIOS | Linz Institute for Organic Solarcells | In English |
In German | → Research institutes → Energy economics |
| LIPS | Laser-Induzierte Plasma Spektroskopie | In German | → Plasma physics |
| LIS | Landinformationssystem | In German | → Software → Geography |
| LMU | Ludwig-Maximilians-Universität | In German | → Higher education, universities |
| LOB | Logistik- und Organisationsberatung | In German | |
| LR | Luft und Raumfahrt | In German | → Serial publications, periodicals → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| LSAP | Luxemburger Sozialistische Arbeiterpartei = LSAP | Lëtzebuerger Sozialistesch Aarbechterpartei | In Letzeburgesh = POSL | Parti Ouvrier Socialiste Luxembourgeois | In French = LSAP | Luxemburgse Socialistische Arbeiderspartij | In Dutch |
In German | → Political parties and movements |
| LUM | Lehrervereinigung der Urner Mittelschule | In German | → Organizations and associations → Education |
| LuRaQ | Luft und Raumfahrt Quarter | In German | → Serial publications, periodicals → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| LVA | Lebensmittelversuchsanstalt | In German | → Beverage industry → Food technology |
| LWB | Lothringisches Wörterbuch | In German | → Dictionaries → Linguistics |
| LZH | Laser Zentrum Hannover | In German | → Optics → Electromagnetism |
| M | Methionin = M | Methionine | In English = M | Metionina | In Catalan = M | Metionina | In Spanish = M | Metionino | In Esperanto = M | Méthionine | In French = M | 메티오닌 | In Korean = M | Metionin | In Indonesian = M | Metionina | In Italian = M | Metionin | In Croatian = M | מתיונין | In Hebrew = M | Metionīns | In Latvian = M | Methionin | In Letzeburgesh = M | Metioninas | In Lithuanian = M | Methionine | In Dutch = M | メチオニン | In Japanese = M | Metionin | In Norwegian = M | Metionina | In Polish = M | Metionina | In Portuguese = M | Метионин | In Russian = M | Метионин | In Serbian = M | Metioniini | In Finnish = M | Metionin | In Swedish = M | Metiyonin | In Turkish = M | Метіонін | In Ukrainian = M | 蛋氨酸 | In Chinese |
In German | → Biochemistry, biophysics |
| MAK | Museum für angewandte Kunst | In German | → Museums → Arts |
| MÄS | Münchner Ägyptologische Studien | In German | → Archeology |
| MAS | Morbus Alzheimer Syndrom | In German | → Neurology |
| MB | Marburger Bund | In German | → Organizations and associations → Labour, labour economics |
| MBR | Membran-Bioreaktor | In German | |
| MBV | Mauritius Buch Verlag | In German | → Graphic industries, printing, publishing |
| MDAIK | Mitteilungen des Deutschen Archäologischen Institutes, Abteilung Kairo | In German | → Serial publications, periodicals → Archeology |
| MDG | Millennium Development Goals = OMD | Objectifs du Millénaire pour le Développement | In French = OSM | Obiettivi di Sviluppo del Millennio | In Italian = TPM | Tujuan Pembangunan Milenium | In Indonesian = ODM | Objetivos de Desarrollo del Milenio | In Spanish = MDM | Metas de Desenvolvimento do Milênio | In Portuguese |
In German | → United Nations → Development |