U
- U2
- Morris "Mo" Udall
- Brenda Ueland
- Morihei Ueshiba
- Anna M. Uhlich
- William B. Ullathorne
- Ellen Ullman
- Harvey Ullman
- James Ramsey Ullman
- Samuel Ullman
- Tracey Ullman
- Liv Ullmann
- Lars Ulrich
- Miguel de Unamuno
- Evelyn Underhill
- United States Armed Forces
- Unknown
- Jesse Unruh
- Louis Untermeyer
- John Updike
- Thomas C. Upham
- 7-Up marketing campaign
- Allen Upward
- Keith Urban
- Pope Urban II
- Carlos A. Urbizo
- Midge Ure
- Leon Uris
- Ed H. Urqhardt
- Usher
- James Ussher
- Peter Ustinov
- U.S. v. Seeger
