UPF
- International Francophone Press Union
- UPF-Centre for Animal Ethics
- Uganda Police Force
- Ultra-processed food
- Ultraviolet Protection Factor
- Unified Popular Front
- Unified Power Format
- Union for France
- Union populaire française
- United Patriots Front
- United People's Front of Nepal
- United Popular Front
- Universal Peace Federation
- Universal Peace Foundation
- Universidad Paulo Freire
- Universidade de Passo Fundo
- Universitat Pompeu Fabra
- University Press of Florida
- Université de la Polynésie Française
- Up-Country People's Front
- Upper Palatine Forest
- Upsurging People's Force
- Ustʹ Pinega Formation
- Utah Pride Festival
- Überwachung Post- und Fernmeldeverkehr