| Author | Titles | | 1.
| Umbelino, Ana | 1 | | 2.
| Umbelino, Cláudia | 1 | | 3.
| Umbelino, Luís António | 4 | | 4.
| Umbelino, Luís António Ferreira Correia | 0 | | 5.
| Author is: Umbelino, Luís António | 4 | | 6.
| Umberg, Johann Baptist | 1 | | 7.
| Umbo, pseud. | 1 | | 8.
| Umehara, Takao | 1 | | 9.
| Umeleckoprumyslové Muzeum (República Checa) | 1 | | 10.
| Umemoto, Yoichi | 1 | | 11.
| Umeuaka, Manazaburo | 1 |
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