| UAV | Unmanned Aerial Vehicle |
| UNCTAD | United Nations Conference on Trade and Development |
| UNDP | United Nations Development Programme |
| UNEP | United Nations Environment Programme |
| UNFPA | United Nations Fund for Population Activities |
| UPS | Uninterruptible Power Supply |
| VAT | Value Added Tax |
| VOIP | Voice Over Internet Protocol |
| VPN | Virtual Private Network |
| VSAT | Very Small Aperture Terminals |
| WADA | World Anti-Doping Agency |
| WAP | Wireless Application Protocol |
| WAVE | Wireless Access for Virtual Enterprise |
| WFP | World Food Programme |
| WFTU | World Federation of Trade Unions |
| WHO | World Health Organisation |
| WLL | Wireless in Local Loop |
| WWW | World Wide Web |
| XML | Extensible Markup Language |
| YWCA | Young Women’s Christian Association |
| ZSI | Zoological Survey of India |
| ZUPO | Zimbabwe United People Organisation |