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 | |
| Hiroto UETSU | | 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 | |
