| TYSC LC16 | - | | 0 | LP |
| TYSC LC7 | - | | 0 | LP |
| TYSC LC9 | - | | 0 | LP |
| TYSC LC9A | - | | 0 | LP |
| Tyumen' missile base, Russia | - | | 0 | LP |
| TYUM LC12/2 | - | | 0 | LP |
| TYUM LC13 | - | | 0 | LP |
| TYUM LC13/3 | - | | 0 | LP |
| Uchinoura Space Center, Kagoshima (formerly Kagoshima) | - | J | 8 | LS |
| Uchinoura Space Center, Kagoshima (formerly Kagoshima) (location) | - | | 0 | LS |
| Uiju launch location, N Pyongan province, N Korea | - | KP | 0 | LS |
| UL launcher, CL Alcantara (CLA, Alcantara Space Center) | Alcantara, Maranhao, Brasil | | 0 | LP |
| Umm Qasr (Um Qassir) | Umm Qasr (Um Qassir), Shatt Al Arab, Iraq | IQ | 0 | LS |
| Unidentified pad at HADC, possibly NATIV? ACC property 1139 (Holloman Air Development Center, New Mexico) | - | | 0 | LP |
| Unidentified pad at HADC, possibly NATIV? ACC property 1142 (Holloman Air Development Center, New Mexico) | - | | 0 | LP |
| Universal Launcher 3, Pad 7, Andoya (Andoya Rocket Range, Andoy, Nordland, Norge) | Andoya | | 0 | LP |
| Universal Launcher 6, Johnston Island | - | | 0 | LP |
| Universal Launcher No. 3, Tonopah Test Range, Nevada | - | | 0 | LP |
| Universal Launcher, Pad 1, Churchill Research Range, Canada (Churchill Research Range, Fort Churchill, Manitoba, Canada) | - | | 0 | LP |
| UNK cruise May 1971-Jul 1971 [Loc wrong in RF] (Shirshov Expedition 3, 1971 (SU000302)) | Indian Ocean | | 0 | LP |
| UNK cruise May 1971-Jul 1971 (Shirshov Expedition 3, 1971 (SU000302)) | Indian Ocean | | 0 | LP |
| UNK cruise Nov 1970-Feb 1971 [164W in RF, typo?] (Korolev Expedition 1, 1970-71 (SU000303)) | Pacific Ocean | | 0 | LP |
| UNK cruise Nov 1970-Feb 1971 (Korolev Expedition 1, 1970-71 (SU000303)) | Pacific Ocean | | 0 | LP |
| UNK cruise Nov 1970-Feb 1971 (Voeykov Expedition 9, 1970 (SU000292)) | Indian Ocean | | 0 | LP |
| Unknown 629 (Golf) submarine | - | SU | 0 | SUB |
| Unknown 667BD (Murena-M, Delta 2) class submarine | - | SU | 0 | SUB |
| Unknown 667BDRM (Delfin, Delta 4) class submarine | - | SU | 0 | SUB |
| Unknown Aegis ship | - | US | 0 | SHIP |
| Unknown Iskander launch site, Armenia | Armenia | AM | 0 | LS |
| Unknown Israeli ship | - | IL | 0 | SHIP |
| Unknown Jinji Qianting (Type 094) class sub | - | CN | 0 | SUB |
| Unknown Kalmar (667 BDR, Delta III) class sub | - | SU | 0 | SUB |
| Unknown - Launch Point 1, Eastern Test Range, Atlantic Ocean | - | | 0 | LP |
| Unknown - Launch Point 5, Eastern Test Range, Atlantic Ocean | - | | 0 | LP |
| Unknown - Launch Point 6, Eastern Test Range, Atlantic Ocean | - | | 0 | LP |
| Unknown - Launch Point 7, Eastern Test Range, Atlantic Ocean | - | | 0 | LP |
| Unknown mobile launch sites in Semnan province, poss. near Shahrud | - | IR | 0 | LS |
| Unknown PrSM launch location, Persian Gulf | - | US | 0 | LS |
| Unknown silo, GTsP-4, Kapustin Yar (GTsP-4, Kapustin Yar, Volgograd, Rossiya) | - | | 0 | LP |
| Unknown Site | - | EA | 0 | LS |
| Unknown site for R-2A launches, near KY (GTsP-4, Kapustin Yar, Volgograd, Rossiya) | - | | 0 | LP |
| Unknown Site (location) | - | | 0 | LS |
| Unknown Soviet cruise meteo launch site 1969 - see also UNKMR4 (Shokalskiy Expedition 5, 1969 (SU10335)) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site 1969 (Voeykov Expedition 6, 1968-69 (SU000260)) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site 1969 (Zubov Expedition 1, 1969) | Atlantic Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site (Kerguelen Range, Port-Aux-Francais, Kerguelen Island) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site (Meteo Rocket Ship Launch Area, Indian Ocean) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site - see also GMS68B (Shokalskiy Expedition 4, 1968-69 (SU000266)) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site see also GMS68B (Shokalskiy Expedition 5, 1969 (SU10335)) | Indian Ocean | | 0 | LP |
| Unknown Soviet cruise meteo launch site - see also GMS68B (Voeykov Expedition 6, 1968-69 (SU000260)) | Indian Ocean | | 0 | LP |