United Kingdom
A sympathetic anthropologist uses drugs and surgery to try to communicate with a primitive troglodyte who is found living in a local cave. - IMDb
| L'abominable homme des cavernes |  France |
| La caverna del terror |  Mexico |
| La caverna del terror |  Argentina |
| A Caverna do Homem Monstro |  Portugal |
| A Caverna do Homem-Monstro (alternative spelling) | Portugal |
| The Missing Link |  USA |
| Il terrore di Londra |  Italy |
| Trog |  Australia |
| Trog |  Canada |
| Trog | Canada |
| Trog | United Kingdom |
| Trog | USA |
| Trog, o Monstro da Caverna |  Brazil |
| Trogi |  Finland |
| Tromos ap' to parelthon (transliterated title) |  Greece |
| Das Ungeheuer |  West Germany |
| Das Ungeheuer | West Germany |
| Трог |  Soviet Union |
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Chloe Franks [7] | Little Girl |
