USA
Cowboy James Franciscus seeks fame and fortune by capturing a Tyrannosaurus Rex living in the Forbidden Valley and putting it in a Mexican circus. His victim, called the Gwangi, turns out to have an aversion to being shown in public. Another film featuring the stop-action special effects talents of Ray Harryhausen. - IMDb
| Ao Sul do Rio Grande |  Portugal |
| Gwangi | |
| Gwangis hevn |  Norway |
| Gwangis Rache - Das Tal der Dinosaurier |  West Germany |
| I apigorevmeni koilada (transliterated title) |  Greece |
| Kyofu Guwanji |  Japan |
| The Lost Valley | |
| O Vale de Gwangi |  Brazil |
| O Vale dos Monstros | Portugal |
| Die Rache der Dinosaurier (DVD box title) | West Germany |
| Thung Lũng Gwangi |  Vietnam |
| A Tiltott völgy |  Hungary |
| Údolí Gwangi |  Czechoslovakia |
| Údolí Gwangi | Czechoslovakia |
| Údolí Gwangi | Czechoslovakia |
| Údolie Gwangi | Czechoslovakia |
| Údolie Gwangi |  Slovakia |
| La vall de Gwangi |  Spain |
| El Valle de Gwangi |  Chile |
| El Valle de Gwangi | Spain |
| El Valle de Gwangi |  Mexico |
| La vallée de Gwangi |  France |
| La vallée des Monstres (poster title) |  Belgium |
| De Vallei van de Monsters (poster title) | Belgium |
| The Valley of Gwangi |  Australia |
| The Valley of Gwangi |  Canada |
| The Valley of Gwangi | Canada |
| The Valley of Gwangi |  United Kingdom |
| The Valley of Gwangi | USA |
| The Valley Time Forgot | |
| The Valley Where Time Stood Still | |
| The Valley--Where Time Stood Still | USA |
| La vendetta di Gwangi |  Italy |
| Η απαγορευμένη κοιλάδα | Greece |
| Η απαγορευμένη κοιλάδα του Γκοτζίλα (reissue title) | Greece |
| Η κοιλάδα του Γάγγη | Greece |
| Στα κοφτερά δόντια του Γκοτζίλα (reissue title) | Greece |
| Долина Гванги |  Serbia |
| Долина Гванги |  Soviet Union |
| 恐竜グワンジ | Japan |
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Curtis Arden [12] | Lope |
