| Country | Date | |
|---|---|---|
| USA | 10 October 1956 | (New York City, New York) (premiere) |
| USA | 24 November 1956 | |
| Austria | December 1956 | |
| West Germany | 12 December 1956 | |
| Japan | 19 December 1956 | |
| France | 9 January 1957 | |
| Sweden | 13 February 1957 | |
| Italy | 28 February 1957 | |
| Finland | 29 March 1957 | |
| Australia | 6 June 1957 | |
| Hong Kong | 17 July 1958 | |
| Denmark | 19 December 1958 | |
| Finland | 27 December 1968 | (re-release) |
| Japan | 8 January 1972 | (re-release) |
| Finland | 22 July 1983 | (re-release) |
| USA | 20 September 1996 | (re-release) |
| France | 24 December 2003 | (re-release) |
| Denmark | 27 March 2004 | (NatFilm Festival) |
| France | 28 September 2005 | (re-release) |
| Giganten | Austria / Denmark / West Germany |
| Géant | Canada (French title) / France |
| Gigante | Argentina / Spain |
| A'nuck | Israel (Hebrew title) |
| Assim Caminha a Humanidade | Brazil |
| Devlerin aski | Turkey (Turkish title) |
| Gigante, Il | Italy |
| Gigante, O | Portugal |
| Gigas, O | Greece |
| Jätten | Sweden |
| Jättiläinen | Finland |
| Olbrzym | Poland |
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