| Country | Date | |
|---|---|---|
| USA | 15 June 1960 | (New York City, New York) (premiere) |
| USA | 21 June 1960 | (Los Angeles, California) (premiere) |
| UK | 20 July 1960 | (London) (premiere) |
| Italy | August 1960 | (Venice Film Festival) |
| France | 16 September 1960 | |
| West Germany | 16 September 1960 | |
| Japan | 8 October 1960 | |
| Finland | 28 October 1960 | |
| Austria | 2 December 1960 | |
| Italy | 9 December 1960 | |
| Denmark | 26 December 1960 | |
| Sweden | 16 January 1961 | |
| Norway | 4 September 1961 | |
| Hong Kong | 26 October 1961 | |
| Spain | 19 December 1962 | (Madrid) |
| Spain | 23 December 1962 | (Barcelona) |
| Czechoslovakia | 4 October 1963 | |
| Denmark | 29 June 2001 | (re-release) |
| Belgium | 13 August 2003 | (re-release) |
| Netherlands | 12 August 2004 | (re-release) |
| Greece | 21 May 2007 | (DVD premiere) |
| Greece | 5 June 2008 | (re-release) |
| Das Appartement | Austria / West Germany |
| La garçonnière | Canada (French title) / France |
| Piso de soltero | Argentina / Mexico (informal alternative title) |
| Byt | Czechoslovakia |
| El apartamento | Spain |
| Garsoniera | Poland |
| Garsoniyer | Turkey (Turkish title) |
| I garsoniera | Greece |
| Kärleksnästet | Sweden (TV title) |
| L'appartamento | Italy |
| Legénylakás | Hungary |
| Nøglen under måtten | Denmark |
| O Apartamento | Portugal |
| Poikamiesboksi | Finland |
| Se Meu Apartamento Falasse | Brazil |
| Ungkarlslyan | Sweden |
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