| Author | | Full name | Comp. | MM | |
| Uijterlinde, J. |  |  J.W. Uyterlinde, (Jan) (1957 - ) | 1 | | |
| Uitkomst, M. | | | 2 | | |
| Ukman, G. |  |  G.A. Ukman, (Georgi Karlovitsj) | 1 | | |
| Ulysse, E. | | | 1 | | |
| Uminov, S.J. | | | | 3 | |
| Unterhorst, J.F. | |  J.F. Unterhorst, (Frederik Johannes) | 1 | | |
| Urbo Firetree, | | | 1 | | Info |
| Urlings, P.J.M. | |  P.J.M. Urlings, (Pierre) (1950 - ) | 4 | | |
| Urrutibenety, M. |  |  M. Urrutibenetty, (Michel) | 1 | | |
| Ustianov, S. |  |  S.Y. Ustianov, (Stanislav Yurijevitsj) (1965 - ) | 158 | 47 | |
| Ustinov, I.N. | | | 2 | | |
| Uvarov, A.V. | |  A.V. Uvarov, (Anatoly Vasilijevitsj) (17.03.1947 - 20.08.2016) | 684 | 4 | |
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MotifMine
