| OMT | Organizzazione Mondiale del Turismo = OMT | Organisation Mondiale du Tourisme | In French = WTO | World Tourism Organization | In English = СТО | Светска туристичка организација | In Russian = OMT | Organização Mundial de Turismo | In Portuguese = OMT | Organización Mundial del Turismo | In Spanish = OMT | Organizazion Mondiâl dal Turisim | In Friulian |
In Italian | → United Nations → Tourism |
| OMT | Organización Mundial del Turismo = WTO, СТО (look above) |
In Spanish | → United Nations → Tourism |
| OMT | Organizazion Mondiâl dal Turisim = WTO, СТО (look above) |
In Friulian | → United Nations → Tourism |
| ONT | Office National du Tourisme | In French | → Central administration → Tourism |
| OT | Office de tourisme | In French | → Tourism |
| ÖTK | Österreichischer Touristenklub | In German | → Tourism |
| OUNID | Organizo de la Unuiĝintaj Nacioj por Industria Disvolvado (www.unido.org) = UNIDO | United Nations Industrial Development Organization | In English |
In Esperanto | → International relations → Industry, industrial policy → United Nations |
| P&E | Pricing and Estimating | In English | → Prices |
| PCP | Project Cost Plan | In English | → Management → Prices |
| PCRS | Performance and Cost Report System | In English | → Prices |
| PCTO | Payload Cost Tradeoff Optimization | In English | → Prices |
| PEI | Projet Entreprise Innovante | In French | → 3384 → 650115 |
| PIMEC | Petita i Mitjana Empresa de Cataluña | In Spanish | → Organizations and associations → 33846 |
| PMII | Programmes Mobilisateurs pour l'Innovation Industrielle | In French | → Research policy → Industry, industrial policy |
| POT | Polska Organizacja Turystyczna | In Polish | → Organizations and associations → Tourism |
| PRCTE | Programme Régional de la Création et de la Transmission d'Entreprises | In French | |
| PT | Palvelutyönantajat | In Finnish | → Organizations and associations → Labour, labour economics → 33846 |
| PVLA | Purchase Versus Lease Analysis | In English | → 33745 → Prices |
| PWS | Pricing Work Statement | In English | → Prices |
| R2I | Réseau Industriel d'Innovation | In French | → Research policy → Industry, industrial policy → Engineering, technology |
| RC | Recurring Cost | In English | → Prices |
| RCS | Registre du Commerce et des Sociétés | In French | → Trade |
| SACDE | Société d'Aide à la Création et au Développement des Entreprises | In French | → 3384 |
| SDCP | Summary Development Cost Plan | In English | → Prices |
| SEINO | Salons de l’Économie et de l’Industrie du Nord-Ouest | In French | → Economics → Industry, industrial policy |
| SETC | Société d'Exploitation du Tourisme Caribéen | In French | → Tourism |
| SI | Sveriges Industriförbund | In Swedish | → Organizations and associations → Industry, industrial policy |
| SME | Small and Medium Enterprises | In English | → 3384 |
| SMT | Suomen Matkatoimisto | In Finnish | → Tourism |
| SNAV | Syndicat National des Agences de Voyages | In French | → Organizations and associations → Tourism |
| SPC | Shipping and Packing Cost | In English | → Maintenance and logistics → Prices |
| SSCM | Space Station Cost Model | In English | → Prices → Spaceflight engineering, astronautics |
| STCP | Short-Term Cost Plan | In English | → Prices |
| SY | Suomen Yrittäjät | In Finnish | → Organizations and associations |
| TAC | Total Average Cost | In English | → Prices |
| TARTAM | TArif Réglementé Transitoire d'Ajustement du Marché | In French | → Prices → Electrical engineering |
| TCM | Target Cost per Mission | In English | → Prices |
| TCO | Total Cost of Ownership | In English | → Prices |
| TER | Travel Expense Report | In English | → Prices |
| TPN | Tarif de Première Nécessité | In French | → Prices → Electrical engineering |
| TTRA | Travel and Tourism Research Association | In English | → Tourism |
| UEAPME | Union Européenne de l’Artisanat et des Petites et Moyennes Entreprises | In French | → Organizations and associations → 3384 |
| UHCCI | Union of Hellenic Chambers of Commerce and Industry | In English | → Organizations and associations → Trade → Industry, industrial policy |
| UNA | Union Nationale de l’Aide, des soins et des services aux domiciles | In French | → Organizations and associations → 33846 |
| UNAPL | Union Nationale des Professions Libérales | In French | → Organizations and associations → 33846 |
| UNEDIC | Union Nationale interprofessionnelle pour l'Emploi dans l'Industrie et le Commerce | In French | → Organizations and associations → Labour, labour economics → Industry, industrial policy → Trade |
| UNICE | Union des Confédérations de l’Industrie et des Employeurs d’Europe | In French | → Organizations and associations → Labour, labour economics → Industry, industrial policy |
| UNIDO | United Nations Industrial Development Organization (www.unido.org) = OUNID (look above) |
In English | → International relations → Industry, industrial policy → United Nations |
| UNPLIB | Union Nationale des Professions Libérales et Intellectuelles de Belgique | In French | → Organizations and associations → 33846 |
| USPL | Union Suisse des Professions Libérales | In French | → Organizations and associations → 33846 |
| UTICA | Union Tunisienne de l'Industrie, du Commerce et de l'Artisanat | In French | → Organizations and associations → Industry, industrial policy → Tourism |
| VÖI | Vereinigung Österreichischer Industrieller | In German | → Organizations and associations → Industry, industrial policy |
| WICOMO | Wang Institute Cost Model | In English | → Prices |
| WTO | World Tourism Organization = OMT, СТО (look above) |
In English | → United Nations → Tourism |
| YSC | Yearly Spares Cost | In English | → Prices |
| ZDH | Zentralverband des Deutschen Handwerks | In German | → Organizations and associations → 3384 |
| ZI | Zone Industrielle | In French | → Industry, industrial policy → Regional planning |
| ΓΣΕΒΕΕ | Γενική Συνομοσπονδία Επαγγελματιών Βιοτεχνών Εμπόρων Ελλάδας | In Greek | → Organizations and associations |
| СТО | Светска туристичка организација = OMT, WTO (look above) |
In Russian | → United Nations → Tourism |