Life on Mars refers to the scientific investigation on the possibility of microbial life (past or present) on the planet Mars.
Life on Mars may also refer to:
- Life on Mars (British TV series), a British television drama
- Life on Mars (American TV series), an American remake of the British television drama
- Life on Mars (South Korean TV series), a Korean remake of the British television drama
- La Chica de Ayer (TV series), a Spanish remake of the British television drama
- The Dark Side of the Moon (TV series), a Russian remake of the British television drama
- Svět pod hlavou, a Czech remake of the British television drama
- "Life on Mars" (The West Wing), an episode of The West Wing
- "Life on Mars?", a 1971 song by David Bowie from Hunky Dory
- Life on Mars, an album by Dexter Wansel or the title track
- Life on Mars, an album by The Veronicas
- Life on Mars (poetry collection), a 2011 book by Tracy K. Smith
- Lego Life on Mars, a LEGO set brick collection from 2001
- All pages with titles containing Life on Mars
- All pages with titles beginning with Life on Mars
- Live from Mars, a 2001 live album by Ben Harper & the Innocent Criminals
- Martian, a hypothetical or fictional inhabitant of Mars
- Colonization of Mars
- Life (disambiguation)
- Mars (disambiguation)