| Author | Titles | | 1.
| UBS Art Collection (Zurique, Suiça) | 1 | | 2.
| Ubungen, Pearl, 19--?- | 1 | | 3.
| UCCA - Ullens Center for Contemporary Art (Beijing, China) | 2 | | 4.
| Uccello, Emanuela | 1 | | 5.
| Uccello, Monica | 1 | | 6.
| Uccello, Paolo, 1396?-1479? | 1 | | 7.
| Uccello, Paolo, 1397-1475 | 7 | | 8.
| Uccello, Seb. | 1 | | 9.
| Ucci, Alessandra | 1 | | 10.
| Uccia, Birgid | 1 |
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