Address Unknown

Address Unknown may refer to:
 * Address Unknown (novel), a 1938 short novel by Kathrine Taylor
 * Address Unknown (1944 film), an American film based on Taylor's novel, directed by William Cameron Menzies
 * Address Unknown (1986 film), an American film directed by John Gianvito
 * Address Unknown (1997 film), an American film starring Kyle Howard
 * Address Unknown (2001 film), a South Korean film directed by Kim Ki-duk
 * "Address Unknown", a 1939 No. 1 hit song by The Ink Spots
 * Address Unknown, a radio program written by Ross Napier
 * Address Unknown, a fictional television show in the video games Max Payne and Max Payne 2