| Termen/ Term | Nr. apariții/ No. occurrences |
| TURA | 5 |
| TURCHESTAN | 1 |
| TURCIA | 110 |
| TURCIA MARASCH | 1 |
| TURCIA(EPIR) | 1 |
| TURIMSKAIA | 1 |
| TURINSKAIA | 1 |
| TURKESTAN | 7 |
| TURKESTANUL DE VEST | 1 |
| TURKESTANUL ORIENTAL | 4 |
| TURKMENIA | 4 |
| TUZGAI | 2 |
| U R S S | 2 |
| U.R.S.S. | 4 |
| UBATUBA | 1 |
| UCRAINA | 7 |
| UDINE | 11 |
| UDOKAN | 1 |
| UENO | 1 |
| UFALOI-URAL | 1 |
| UFTON ? | 1 |
| UGANDA | 4 |
| ULDUS | 2 |
| ULIASSUTAI | 2 |
| ULMU | 1 |
| ULUL-NONO | 2 |
| UMDLOTI | 2 |
| UMHAUSEN | 1 |
| UMHLANGA ROCKS | 1 |
| UND FICUS 50-150 M | 1 |
| UNGARIA | 23 |
| UNIUNE INDIANA | 2 |
| UNIUNEA INDIANA | 16 |
| UNIUNEA SOVIETICA | 99 |
| URAL | 25 |
| URAL:MAXIMILIANOVSKA | 1 |
| URALI | 60 |
| URALI MINSK | 1 |
| URALII DE SUD | 1 |
| URALSK | 31 |
| URLUCHIOI | 1 |
| URSS | 489 |
| URSS - SIBERIA | 1 |
| URSS ALEXANDROVSKAIA | 1 |
| URSS ARMENIA | 1 |
| URSS BERESOWSK | 1 |
| URSS DE EST | 1 |
| URSS KAZAHSTAN:S-V KAZAL-KUM | 2 |
| URSS MIASSK-URALI | 1 |
| URSS UCRAINA | 1 |