alphabetical list:
| Wessel UBINK |  | Yuuta UCHIDA |  | Jun UCHIUMI | |
| Masaki UCHIYAMA | | Norikazu UCHIYAMA | | Hayato UCHIZAWA | |
| Azhar UDIN |  | Kazuma UECHI | | Hirokatsu UEDA | |
| Katsuhito UEDA | | Kenki UEDA | | Shiki UEDA | |
| Taisei UEDA | | Yoshiaki UEDA | | Daichi UEHARA | |
| Hiroichi UEHARA | | Itsuki UEHARA | | Ryu UEHARA | |
| Yuuma UEHARA | | Kenji UEMATSU | | Ryuuki UEMIZU | |
| Kazuki UEMOTO | | Ryo UEMURA | | Sena UEMURA | |
| Yoshinori UETSU | | Reima UGAJIN | | Oleg UGODNIKOV |  |
| Hugo UIJLENBROEK | | Sies UILKEMA | | Jochem UITHOVEN | |
| Nick UITHOVEN | | Stanislav UKHANOV |  | Igor UKOLOV | |
| Dmitrij ULANOV |  | Kristian ULEKLEIV |  | Hunter ULETT |  |
| Jevgenij ULJANENKO | | Nikolaj ULJANIN | | Aleksandr ULJANOV | |
| Demid ULJANOV | | Vladimir ULJANOV | | Pieter ULLERSMA | |
| Nicolai ULVAN | | Alisher UMAROV | | Takumi UMEDA | |
| Shunichi UMEMURA | | Igor UMERENKOV | | Georg UNGER | |
| Ryouta UNO | | André UNTERDÖRFEL | | Hannes UNTERMARZONER |  |
| Jin URAKAWA | | Dawid URBAŃSKI |  | Andrej URENJOV | |
| Jaroslav URJUPIN | | Dmitrij URLJAPOV | | Ryo URUSHIZAWA | |
| Nikita URUSOV | | Jurij URZJUMOV | | Yuuta USAMI | |
| Falk USCHNER | | Nikita USENKO | | Takeshi USHIDA | |
| Dai USHIYAMA | | Genki USHIYAMA | | Hiroki USHIYAMA | |
| Takahiro USHIYAMA | | Dmitrij USJAKOV | | Vladislav USJAKOV | |
| Vladislav USJAKOV | | Andrej USJMAJEV | | Rustam USMANOV | |
| Dias USOLTSEV | | Danila USPEKHOV | | Nikita USPEKHOV | |
| Konstantin USTINOV | | Dmitrij USTJANTSEV | | Aleksej USTJUZJANINOV | |
| Konstantin USTSOV | | Maciej USTYNOWICZ | | Hidenori USUI | |
| Denis UTROBIN | | Lars-Magne UTTISRUD | | Galbaatar UUGANBAATAR |  |
| Borys UVAROV |  | Jochem UYTDEHAAGE | | Nikita UZOKIN | |
