Address Unknown
Address Unknown is the title of the following works:
- Addressee unknown , letter novel by Kressmann Taylor
- Address Unknown (1944) , American film noir
- Address Unknown (1997) , American adventure film
- Address Unknown (2001) , South Korean drama film
- Address Unknown (2006) , Australian short film
- Címzett ismeretlen (1935), Hungarian comedy film; US distribution title Address Unknown