| Country | Date | |
|---|---|---|
| France | May 1976 | (Cannes Film Festival) |
| Italy | 23 September 1976 | |
| France | 27 October 1976 | |
| Spain | 13 January 1977 | |
| Portugal | 13 May 1977 | |
| Belgium | 2 June 1977 | (Gent) |
| Uruguay | 10 June 1977 | |
| West Germany | 12 August 1977 | (TV premiere) |
| Finland | 9 September 1977 | |
| Japan | 23 September 1977 | |
| East Germany | 7 October 1977 | |
| Sweden | 19 October 1977 | |
| USA | 6 November 1977 | (New York City, New York) |
| Denmark | 10 November 1977 | |
| Turkey | March 1978 | |
| Hungary | 13 April 1978 | |
| Hong Kong | 13 December 2002 | (French Cinepanorama Film Festival) |
| Hong Kong | 8 May 2005 | (Le French May Film Festival of Hong Kong) |
| Greece | 25 September 2011 | (Athens Film Festival) |
| Mr. Klein | Denmark / Italy / UK / USA |
| Monsieur Klein | Canada (French title) / East Germany / France (DVD title) |
| El otro Sr. Klein | Argentina / Spain |
| Chi è Mr. Klein? | Italy |
| El otro señor Klein | Uruguay |
| Kaderi arayan adam | Turkey (Turkish title) |
| Klein úr | Hungary |
| Mister Klein | Greece (transliterated ISO-LATIN-1 title) |
| Mr Klein | USA (video title) |
| O kyrios Klein | Greece (festival title) |
| Pan Klein | Poland (imdb display title) |
| Um Homem na Sombra | Portugal |
| Varjojen vanki | Finland |
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