Mars 1 (disambiguation)

Mars 1 was an early Soviet mission to Mars.

It may also refer to
 * Mars One, a proposed colony on Mars
 * Mars One (film), a 2022 Brazilian film
 * Phobos (moon), a natural satellite of Mars, systemically designated Mars I
 * Mars Orbiter Mission, the first Indian Mars mission
 * Yinghuo-1, the first attempted Chinese mission to Mars
 * Tianwen-1 (formerly Huoxing-1 ), first Chinese space probe to reach Mars
 * USS Mars, the first USS Mars
 * HMS Mars (1665), the first HMS Mars
 * the first volume of Fuyumi Soryo's Mars (manga)