- Ulate Chacon Enrique
- Ullah Anhar
- Ullah Irfan
- Ulloque Franco Hector
- Underhill P.A.
- Underhill Peter A
- Underhill Peter. A.
- Underhill Peter
- Underhill Peter
- Ung Sophal
- Uok Vithiea
- Upadhyaya Shashi Bhusan
- Urban Matthias
- Urban Null- H
- Urbanová Petra
- Urbanski Sébastien
- Uribe Rodríguez Mauricio
- Urioste Guglielmone Sebastian