| Country | Date | |
|---|---|---|
| USA | 31 July 1999 | (premiere) |
| USA | 4 August 1999 | (Los Angeles, California) |
| USA | 6 August 1999 | |
| Taiwan | 20 November 1999 | (Taipei Golden Horse Film Festival) |
| Israel | 2 December 1999 | |
| France | 8 December 1999 | |
| Switzerland | 15 December 1999 | (French speaking region) |
| Germany | 16 December 1999 | |
| Netherlands | 16 December 1999 | |
| Singapore | 16 December 1999 | |
| Denmark | 17 December 1999 | |
| Ireland | 17 December 1999 | |
| Norway | 17 December 1999 | |
| Spain | 17 December 1999 | |
| Sweden | 17 December 1999 | |
| UK | 17 December 1999 | |
| Belgium | 22 December 1999 | |
| Italy | 23 December 1999 | |
| Finland | 25 December 1999 | |
| Taiwan | 25 December 1999 | |
| Iceland | 26 December 1999 | |
| Brazil | 14 January 2000 | |
| Kuwait | 26 January 2000 | |
| Australia | 6 April 2000 | |
| New Zealand | 6 April 2000 | |
| Japan | 15 April 2000 | |
| South Korea | May 2000 | |
| Norway | 3 May 2000 | (Kristiansand International Children's Film Festival) |
| Poland | 12 May 2000 | |
| Hungary | 12 September 2000 | (video premiere) |
| Argentina | 1 December 2000 | (video premiere) |
| Le géant de fer | Canada (French title) / France |
| яРЮКЭМНИ ЦХЦЮМР | Russia |
| De iJzeren reus | Netherlands |
| Demir dev | Turkey (Turkish title) |
| Der Gigant aus dem All | Germany |
| Drengen og jern-kæmpen | Denmark |
| El gigante de hierro | Spain |
| Il gigante di ferro | Italy |
| Järnjätten | Sweden |
| Kosmoserobot | Estonia |
| Rautajätti | Finland |
| Siderenios gigantas | Greece (TV title) |
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