| ITPAM | IEEE (Institute of Electrical and Electronics Engineers) Transactions on Pattern Analysis and Machine Intelligence | In English | → Serial publications, periodicals → Computer science → Mathematics |
| ITS | Intercept Trajectory Simulation | In English | → Computer simulation → Vehicle engineering |
| ITS | Institut de Traitement des Signaux | In French | → Computer-based techniques → Telecommunications |
| ITS | Issue and Tracking System | In English | → Management |
| ITSC | Interregional Telecommunications Standards Committee | In English | → Organizations and associations → Networks, communication → Telecommunications |
| ITSE | IEEE (Institute of Electrical and Electronics Engineers) Transactions on Software Engineering | In English | → Serial publications, periodicals → Software |
| ITSM | IT Service Management | In English | → Computer science |
| ITSMC | IEEE (Institute of Electrical and Electronics Engineers) Transactions on Systems, Man and Cybernetics | In English | → Serial publications, periodicals → Computer science |
| ITSTC | Information Technology Steering Committee | In English | → Organizations and associations → Computer science → Telecommunications |
| ITTF | Information Technology Task Force | In English | → Computer science |
| ITU-T | International Telecommunications Union - Telecommunications Standardization Sector | In English | → Standardization → Telecommunications |
| IU | Interface Unit | In English | → Human-computer interaction |
| IUA | Interface Unit Adapter | In English | → Human-computer interaction |
| IUE | Interface Unit Error | In English | → Human-computer interaction |
| IUI | Integrated User Interface | In English | → Human-computer interaction |
| IUP | International Usability Partners | In English | → Human-computer interaction |
| IUPRAI | Indian Unit for Pattern Recognition and Artificial Intelligence | In English | → Organizations and associations → Artificial intelligence → Computer-based techniques |
| IVE | Interface Verification Equipment | In English | → Human-computer interaction |
| İvHP | İnternet ve Hukuk Platformu | In Turkish | → Networks, communication |
| IVP | Interface Verification Plan | In English | → Human-computer interaction |
| IVR | Interactive Voice Recognition | In English | → Computer-based techniques → Telecommunications |
| IVS | Interface Verification Summary | In English | → Human-computer interaction |
| IVT | Interface Verification Test | In English | → Human-computer interaction |
| IWCE | International Workshop on Computational Electronics | In English | → Computer science → Electronics |
| IWFHR | International Workshop on Frontiers in Handwriting Recognition | In English | → Congresses → Writing systems → Document processing |
| IWG | Interface Working Group | In English | → Human-computer interaction |
| IZT | Institut für Zukunftsstudien und Technologiebewertung (www.izt.de) | In German | → Research institutes → Research policy → Engineering, technology |
| J2EE | Java 2 Enterprise Edition | In English | → Programming languages |
| J2ME | Java 2 Micro Edition | In French | → Programming languages |
| JAAS | Java Authentication and Authorization Service | In English | → Programming languages |
| JABS | Just Another Blog on Sports | In English | → Networks, communication → Sport, physical exercises |
| JAC | Journée d'Acquisition des Connaissances | In French | → Knowledge management |
| JAlgo | Journal of Algorithms | In English | → Computer science → Serial publications, periodicals → 5105 |
| JAMC | Journal of Applied Mathematics & Computing (www.jamc.net) | In English | → Serial publications, periodicals → Computer science → Mathematics |
| JASIS | Journal of the American Society for Information Science and Technology | In English | → Serial publications, periodicals → Computer science |
| JBIG | Joint Bi-level Image Experts Group | In English | → Graphical processing → Image processing |
| JBIG | Joint Bi-level Image Group | In English | → Graphical processing → Image processing |
| JCA | Journal of Computational Acoustics | In English | → Computer science → Serial publications, periodicals → Acoustics |
| JCAMD | Journal of Computer-Aided Materials Design | In English | → Serial publications, periodicals → Graphical processing → Materials science |
| JCM | Journal of Computational Mathematics | In English | → Computer science → Serial publications, periodicals → Mathematics |
| JCoAM | Journal of Computational and Applied Mathematics | In English | → Computer science → Serial publications, periodicals → Mathematics |
| JCoB | Journal of Computational Biology | In English | → Computer science → Serial publications, periodicals → Biological sciences |
| JCoCh | Journal of Computational Chemistry | In English | → Computer science → Serial publications, periodicals → Chemistry |
| JCoN | Journal of Computational Neuroscience | In English | → Computer science → Serial publications, periodicals → Biological sciences → Neurology |
| JCoPh | Journal of Computational Physics | In English | → Computer science → Serial publications, periodicals → Physics |
| JCoSS | Journal of Computer and System Sciences | In English | → Computer science → Serial publications, periodicals |
| JCP | Java Community Process | In English | → Programming languages |
| JCSC | Journal of Circuits, Systems and Computers | In English | → Serial publications, periodicals → Software |
| JDBC | Java DataBase Connectivity | In English | → Software → Data |
| JDE | Java Development Environment | In English | → Programming languages |
| JE | Jeune Équipe | In French | → Research policy |
| JEA | Journal of Experimental Algorithmics | In English | → Serial publications, periodicals → Computer science → Mathematics |
| JEP | Java Math Expression Parser (www.singularsys.com/jep/) | In English | → Software → Mathematics |
| JHSN | Journal of High Speed Networks | In English | → Serial publications, periodicals → Networks, communication → Telecommunications |
| JIRS | Journal of Intelligent and Robotic Systems | In English | → Serial publications, periodicals → Artificial intelligence → Electronics |
| JIS | Japanese Industrial Standard | In English | → Standardization |
| JISC | Japan Industrial Standards Committee | In English | → Standardization |
| JISM | مؤسسة المواصفات والمقاييس الأردنية = JISM | Jordan Institution for Standards and Metrology | In English |
In Arabic | → Standardization |
| JISM | Jordan Institution for Standards and Metrology = (look above) |
In English | → Standardization |
| JM2 | Journal of Modelling in Management | In English | → Management → Serial publications, periodicals |
| JME | JME Molecular Editor | In English | → Software → Chemistry |
| JME | Java Monkey Engine | In English | → Software |
| JMIV | Journal of Mathematical Imaging and Vision | In English | → Serial publications, periodicals → Mathematics → Computer-based techniques |
| JMRP | Junk E-Mail Reporting Program | In English | → Networks, communication |
| JNEng | Journal of Neural Engineering | In English | → Serial publications, periodicals → Artificial intelligence |
| JoDI | Journal of Digital Information | In English | → Serial publications, periodicals → Data |
| JPDC | Journal of Parallel and Distributed Computing | In English | → Serial publications, periodicals → Computer science |
| JPEG | Joint Photographic Experts Group | In English | → Organizations and associations → Graphical processing → Image processing |
| JPEO | Javascript Percent Encoding Obfuscator | In English | → Computer science |
| JRes | Journal of Research | In English | → Serial publications, periodicals → Research policy |
| JRNBS | Journal of Research of the National Bureau of Standards | In English | → Serial publications, periodicals → Standardization |
| JSA | Japanese Standards Association | In English | → Standardization → Associations |
| JSCom | Journal of Scientific Computing | In English | → Serial publications, periodicals → Computer science |
| JSCS | Journal of Statistical Computation and Simulation | In English | → Computer science → Serial publications, periodicals → Mathematics |
| JSGF | Java Speech API Grammar Format | In English | → Software |
| JSON | JavaScript Object Notation | In English | → Software |
| JSPS | Japan Society of Promotion Science | In English | → Organizations and associations → Science and knowledge |
| JSR | Java Specification Request | In English | → Programming languages |
| JSymC | Journal of Symbolic Computation | In English | → Serial publications, periodicals → Computer science → Mathematics |
| JTIDS | Joint Tactical Integrated Display System | In English | → Human-computer interaction |
| JUS | Journal for Usability Studies | In English | → Serial publications, periodicals → Human-computer interaction |
| JVM | Java Virtual Machine | In English | → Programming languages |
| KAEMaRT | Knowledge Aided Engineering, Manufacturing and Related Technologies | In English | → Knowledge management → Engineering, technology |
| KAFE | Kultura Arta Festivalo en Esperanto | In Esperanto | → Civilization, culture, progress → Arts |
| KATS | Korean Agency for Technology and Standards | In English | → Standardization |
| KAZMEMST | Комитет по техническому регулированию и метрологии (Министерства индустрии и торговли Республики Казахстан) = KAZMEMST | Committee for technical regulation and metrology (and certification of the Ministry of Industry and Trade of the Republic of Kazakhstan) | In English |
In Russian | → Standardization |
| KAZMEMST | Committee for technical regulation and metrology (and certification of the Ministry of Industry and Trade of the Republic of Kazakhstan) = (look above) |
In English | → Standardization |
| KB | Keyboard | In English | → Hardware → Human-computer interaction |
| KBIM | Keyboard Interface Module | In English | → Human-computer interaction |
| KBS | Knowledge-Based System | In English | → Software |
| KBS | Knowledge Based System | In English | → Knowledge management |
| KBSA | Knowledge-Based Software Assistant | In English | → Software → Knowledge management |
| KBT | Komputada Baza Terminaro | In Esperanto | → Computer science → Dictionaries |
| KBU | Keyboard Unit | In English | → Hardware → Human-computer interaction |
| KCCA | Knowledge Content Carrier Architecture | In English | → Data |
| KCE | Kultura Centro de Esperanto | In Esperanto | → Civilization, culture, progress |
| KCO | Knowledge Content Object | In English | → Software → Data |
| KCOs | Knowledge Content Objects | In English | → Data |
| KCRT | Keyboard Cathode-Ray Tube | In English | → Hardware |
| KCS | Key(board) Configuration Study | In English | → Human-computer interaction |
| KDMS | Kennedy Data Management System | In English | → Knowledge management → Data |
| KDS | Kennedy-Developed Software | In English | → Software → Spaceflight engineering, astronautics |
| KDT | Keyboard and Display Test | In English | → Human-computer interaction |
| KEBS | Kenya Bureau of Standards | In English | → Standardization |
| KEKG | Kopenhaga Esperanto-Kulturgrupo = KEKG | Københavns Esperanto-Kulturgruppe | In Danish |
In Esperanto | → Organizations and associations → Civilization, culture, progress |
| KEKG | Københavns Esperanto-Kulturgruppe = (look above) |
In Danish | → Organizations and associations → Civilization, culture, progress |
| KEPAF | Képfeldolgozók és Alakfelismerők Társasága | In Hungarian | → Organizations and associations → Graphical processing → Image processing |
| 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 | Kunstmatige Intelligentie = AI, VI, IA (look above) |
In Dutch | → Artificial intelligence |
| KIMEP | Kazakhstan Institute of Management, Economics, and Strategic Research | In English | → Management → International relations → Economics |
| KIMS | KSC (Kennedy Space Center) Inventory Management System | In English | → Management → Spaceflight engineering, astronautics |
| KIP | Keyboard Input Processor | In English | → Hardware → Human-computer interaction |
| KKT | Kommission für Kulturwissenschaften und Theatergeschichte | In German | → Organizations and associations → Civilization, culture, progress → Theatre |
| KKV | Kvinlingva Komputilteĥnika Vortaro | In Esperanto | → Computer science → Dictionaries |
| KL | Komputika Leksikono | In Esperanto | → Computer science → Dictionaries |
| KLM | Keyboard Layout Manager | In English | → Operating systems |
| KMI | KSC (Kennedy Space Center) Management Instruction | In English | → Management → Spaceflight engineering, astronautics |
| KMI | Knowledge Management Institute | In English | → Knowledge management |
| KML | Keyhole Markup Language | In French | → Programming languages |
| KMR | Key Milestone Review | In English | → Management |
| KOS | Knowledge Organisation System | In English | → Knowledge management |
| KPI | Key Performance Indicator | In English | → Management → Finance |
| KPO | Knowledge Process Outsourcing | In English | → Science and knowledge → Knowledge management |
| KR | Keyboards Recording (www.keyboardsrecording.fr) | In English | → Computer science → Music |
| KR | Knowledge Representation | In English | → Knowledge management |
| KTO | Knowledge Transfer Office | In English | → Research policy → Industry, industrial policy |
| KU | Keyboard Unit | In English | → Hardware → Human-computer interaction |
| LAD | Lecture Automatique de Documents | In French | → Document processing |
| LADL | Laboratoire d'Automatisme Documentaire et Linguistique | In French | → Research institutes → Computer science → Libraries → Linguistics |
| LADS | Logistic Automated Data System | In English | → Maintenance and logistics → Engineering, technology |
| LAFORIA | LAboratoire FORmes et Intelligence Artificielle | In French | → Research institutes → Artificial intelligence |
| LAI | Logistics Artificial Intelligence | In English | → Artificial intelligence → Maintenance and logistics |
| LAMP | Linux, Apache, MySQL, PHP | In English | → Software → Networks, communication |
| LAMSADE | Laboratoire d'Analyse et de Modélisation de Systèmes pour l'Aide à la DÉcision | In French | → Research institutes → Computer-based techniques → Management |
| LAN | Local Area Network | In English | → Networks, communication → Telecommunications |
| LANES | LAN (Local Area Network) Extensible Simulator | In English | → Networks, communication |
| LBD | Laboratoire de Bases de Données | In French | → Research institutes → Data |
| LBM | Load Buffer Memory | In English | → Memories |
| LBR | Low Bit Rate | In English | → Computer science |
| LBSP | Logistics Business Systems Plan | In English | → Maintenance and logistics |
| LCB | Least Common Bit | In English | → Computer science |
| LCD | Liquid Crystal Display | In English | → Human-computer interaction → Electronics |
| LCD | Light Crystal Display | In English | → Human-computer interaction |
| LCMS | Learning Content Management System | In English | → Knowledge management → Education |
| LCN | Logistics Control Number | In English | → Maintenance and logistics |
| LCV | Logistics Cargo Vehicle | In English | → Maintenance and logistics → Vehicle engineering |
| LDAP | Lightweight Directory Access Protocol | In English | → Networks, communication |
| LDB | Logistics Data Bank | In English | → Data → Maintenance and logistics |
| LDD | Logical Data Base Design | In English | → Data |
| LDD | Langage de Description de Données | In French | → Data |
| LDIU | Launch Data Interface Unit | In English | → Human-computer interaction → Spaceflight engineering, astronautics |
| LDP | Local Data Package | In English | → Data |
| LDR | Low Data Rate | In English | → Data |
| LDRP | Logistics Depot Repair Procedure | In English | → Maintenance and logistics |
| LEA | Logistics Engineering Analysis | In English | → Maintenance and logistics → Engineering, technology |
| LEA/MP | Logistics Engineering Analysis and Maintenance Planning | In English | → Maintenance and logistics → Engineering, technology |
| LES | Logistic Execution System | In English | → Maintenance and logistics |
| LETI | Laboratoire d'Électronique et de Technologie de l'Informatique | In French | → Research institutes → Computer science → Electronics |
| LFE | Lizherenneg Fonetikel Etrebroadel = AFI | Alfabetul Fonetic Internaţional | In Romanian = МФА | Международната фонетична азбука | In Bulgarian = IPA | Internationales Phonetisches Alphabet | In Tosk = AFI | Alfabet fonètic internacional | In Catalan = IFA | Internacia Fonetika Alfabeto | In Esperanto = IPA | International Phonetic Alphabet | In English = ΔΦΑ | Διεθνές Φωνητικό Αλφάβητο | In Greek = IPA | Internationales Phonetisches Alphabet | In German = 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 | In Vlaams = AFN | Alfabeti Fonetik Ndërkombëtar | In Albanian |
In Breton | → Writing systems |
| LI3 | Laboratoire de recherche en Ingénierie Informatique Intelligente | In French | → Research institutes → Software → Artificial intelligence |
| LIA | Laboratoire d'Informatique d'Avignon (www.lia.univ-avignon.fr) | In French | → Research institutes → Computer science |
| LIBER | Ligue des Bibliothèques Européennes de Recherche | In French | → Organizations and associations → Libraries → Research policy |
| LIDIC | Liaisons Informatiques entre Distributeurs et Constructeurs | In French | → Computer science |
| LIG | Laboratoire d'Informatique de Grenoble | In French | → Research institutes → Computer science |
| LII | Librarians' Internet Index | In English | → Libraries → Networks, communication |
| LiLoLiPo | Linux et les Logiciels Libres à Pont-Château | In French | → Organizations and associations → Software → Operating systems |
| LIMBER | Language Independent Metadata Browsing of European Resources | In English | → Libraries → Computer science |
| LIMS | Logistics Inventory Management System | In English | → 00503 → Knowledge management |
| LIMS | Logistics Information Management System | In English | → Maintenance and logistics → Knowledge management |
| LIMSI | Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur | In French | → Research institutes → Computer science → Mechanical engineering |
| LinAC | Linux Angoulême Charente | In French | → Operating systems |
| LINC | Logic and Information Network Compiler | In English | → Computer science |
| LIP6 | Laboratoire d'Informatique de Paris 6 | In French | → Research institutes → Computer science |
| LIPCNE | Laboratorio de Interacción Persona-Computador para Necesidades Especiales | In Spanish | → Research institutes → Human-computer interaction |
| LIRIS | Laboratoire d'InfoRmatique en Images et Systèmes d'information | In French | → Research institutes → Computer science → Graphical processing |
| LIRMM | Laboratoire d’Informatique, de Robotique et de Micro-électronique de Montpellier | In French | → Research institutes → Computer science → Electronics |
| LIS | Landinformationssystem | In German | → Software → Geography |
| LIS | Logistics Information System | In English | → Maintenance and logistics → Knowledge management |
| LISP | LISt Processing | In English | → Programming languages |
| LIU | Line Interface Unit | In English | → Human-computer interaction |
| LKD | Linux Kullanıcıları Derneği | In Turkish | → Operating systems |
| LKM | Loadable Kernel Modules | In English | → Computer science |
| LLCF | Launch and Landing Computational Facility | In English | → Computer science → Spaceflight engineering, astronautics |
| LLCSC | Low-Level Computer Software Component | In English | → Software |
| LLI | Laboratoire de Linguistique Informatique | In French | → Research institutes → Computer-based techniques → Linguistics |
| LM | Logistics Manager | In English | → Maintenance and logistics |
| LM | Logistics Manual | In English | → Maintenance and logistics |
| LM | Laboratory Module | In English | → Research policy |
| LMD | Langage de Manipulation de Données | In French | → Data |
| LMDS | Logistics Management Data System | In English | → Data → Maintenance and logistics |
| LMO | Liga Manager Online | In English | → Software → Sport, physical exercises |
| LMO | Langages et Modèles à Objets | In French | → Programming languages |
| LMRT | Logistics Management Responsibility Transfer | In English | → Maintenance and logistics |
| LMS | Logistics Master Schedule | In English | → Maintenance and logistics |
| LMS | Learning Management System | In English | → Knowledge management → Education |
| LMT | Logistics Management Transfer | In English | → Maintenance and logistics |
| LNCC | Lecture Notes in Computer Science | In English | → Libraries → Computer science |
| LNCS | Lecture Notes in Computer Science | In English | → Serial publications, periodicals → Computer science |
| LNCSM | Libyan National Centre for Standardization and Metrology | In English | → Standardization |
| LOC | Lines Of Code | In English | → Software |
|