Upa
- 'upa'upa
- Bio Miracle Bokutte Upa
- Bridge (grappling)
- Pickleball
- Project Eden (video game)
- Uganda People's Army
- Ukrainian Insurgent Army
- Ukrainian People's Army
- Ulipristal acetate
- Ulster Protestant Action
- Ulster Protestant Association
- Ultra Port Architecture
- Undesirable Publications Act
- Unidade de Pronto Atendimento
- Uniform Parentage Act
- Uniform Partnership Act
- Union des producteurs agricoles
- Unique Particle Attribution
- United Patternmakers' Association
- United Press Association
- United Productions of America
- United Progressive Alliance
- United States Professional Poolplayers Association
- Universal Powerline Association
- Universidad de Playa Ancha
- University Preparatory Academy
- University Preparatory Academy (Detroit)
- University Press of America
- União dos Povos de Angola
- Upa (river)
- Upa, Azerbaijan
- Upa, Estonia
- Uralic Phonetic Alphabet
- Uralic languages
- Urban Partnership Agreement
- Urokinase
- Utenti Pubblicità Associati
- Úpa