| Country | Date | |
|---|---|---|
| USA | 6 April 1951 | (premiere) |
| USA | 29 April 1951 | |
| Sweden | 22 October 1951 | |
| West Germany | 26 October 1951 | |
| Norway | 26 November 1951 | |
| Denmark | 27 November 1951 | |
| Finland | 14 December 1951 | |
| France | 23 January 1952 | |
| Austria | April 1952 | |
| Japan | 3 May 1952 | |
| USA | 1957 | (re-release) |
| Norway | 1 February 1973 | (re-release) |
| Das Ding aus einer anderen Welt | Austria / West Germany |
| La chose d'un autre monde | Belgium (French title) / France |
| 'Se' toisesta maailmasta | Finland |
| Det från en annan värld | Finland (Swedish title) |
| El enigma... de otro mundo | Spain |
| Fantomen från Mars | Sweden |
| Het ding van een andere wereld | Belgium (Flemish title) |
| L'enigma d'un altre món | Spain (Catalan title) |
| La cosa | Venezuela |
| La cosa da un altro mondo | Italy |
| Manden fra Mars | Denmark |
| The Thing | USA (short title) |
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