Release Dates
| USA | 22 September 2004 | |
| Canada | 2 October 2004 | |
| Belgium | 3 January 2005 | (Flemish speaking region) |
| Denmark | 11 January 2005 | |
| Bulgaria | 22 January 2005 | |
| Czech Republic | 22 January 2005 | |
| Hungary | 22 January 2005 | |
| Poland | 22 January 2005 | |
| Romania | 22 January 2005 | |
| Slovakia | 22 January 2005 | |
| Hungary | 29 January 2005 | |
| Norway | 2 February 2005 | |
| New Zealand | 2 February 2005 | |
| Sweden | 2 February 2005 | |
| Australia | 3 February 2005 | |
| South Africa | 5 February 2005 | |
| Croatia | 22 February 2005 | |
| Hong Kong | March 2005 | |
| Indonesia | March 2005 | |
| Sri Lanka | March 2005 | |
| Macao | March 2005 | |
| Malaysia | March 2005 | |
| Philippines | March 2005 | |
| Thailand | March 2005 | |
| Netherlands | 4 March 2005 | |
| Portugal | 6 March 2005 | |
| Argentina | 7 March 2005 | |
| Brazil | 7 March 2005 | |
| Italy | 22 March 2005 | |
| Germany | 4 April 2005 | |
| Spain | 4 April 2005 | |
| Iceland | 4 April 2005 | |
| Switzerland | 5 April 2005 | (German speaking region) |
| Israel | 16 April 2005 | |
| Ireland | 23 May 2005 | |
| Singapore | 9 June 2005 | |
| Switzerland | 14 June 2005 | (French speaking region) |
| France | 25 June 2005 | |
| Russia | 10 July 2005 | |
| UK | 10 August 2005 | |
| Slovenia | 12 September 2005 | |
| Estonia | 4 October 2005 | |
| Mexico | 18 October 2005 | |
| Japan | November 2005 | |
| Japan | 6 November 2005 | |
| Finland | 26 January 2006 |
Also Known As (AKA)
| Argentina | Lost |
| Bulgaria (Bulgarian title) | Изгубени |
| Brazil | Lost |
| Canada (French title) (dubbed version) | Perdus |
| Chile | Lost |
| Czech Republic | Ztraceni |
| Germany | Lost |
| Denmark | Lost |
| Estonia | Teadmata kadunud |
| Spain | Perdidos |
| Finland | Lost |
| France | Lost - Les disparus |
| Georgia | Dakargulebi |
| Greece (transliterated ISO-LATIN-1 title) | Oi agnooumenoi |
| Croatia | Izgubljeni |
| Hungary | Lost - Eltűntek |
| Hungary | Pokoli éden |
| Israel (Hebrew title) | Avodim |
| Lithuania | Dinge |
| Mexico | Lost |
| Norway | Lost |
| Poland | Lost - zagubieni |
| Portugal | Perdidos |
| Romania | Naufragiatii |
| Serbia | Izgubljeni |
| Russia | Остаться в живых |
| Slovenia | Skrivnostni otok |
| Slovakia | Nezvestní |
| Venezuela | Perdidos |
| Vietnam | Mat Tich |