| Country | Date | |
|---|---|---|
| USA | 28 October 1941 | (New York City, New York) |
| USA | 8 January 1942 | (Los Angeles, California) |
| Australia | 9 April 1942 | |
| Sweden | 1 September 1942 | |
| Finland | 10 October 1943 | |
| Italy | 20 June 1946 | |
| France | 25 July 1946 | |
| Denmark | 30 June 1947 | |
| USA | 1 September 1947 | (re-release) |
| Austria | 3 September 1948 | |
| Hong Kong | 17 March 1949 | |
| West Germany | 28 April 1950 | |
| Japan | 23 December 1950 | |
| Japan | 30 June 1984 | (re-release) |
| ¡Qué verde era mi valle! | Argentina / Spain |
| So grün war mein Tal | Austria / Germany |
| Com'era verde la mia valle | Italy |
| Como Era Verde Meu Vale | Brazil |
| Grøn var min barndoms dal | Denmark |
| I koilada tis kataras | Greece |
| I prasini koilada mou | Greece (DVD title) |
| Jag minns min gröna dal | Sweden |
| O Vale Era Verde | Portugal |
| Qu'elle était verte ma vallée | France |
| Richard Llewellyn's How Green Was My Valley | USA (complete title) |
| Schlagende Wetter | West Germany |
| Schwarze Diamanten | West Germany |
| Vadim o kadar yesildi ki | Turkey (Turkish title) |
| Vihreä oli laaksoni | Finland |
| Zielona dolina | Poland |
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