Mars II is the second moon of Mars.
Mars Two, Mars II, Mars 2 or variant, may also refer to:
Mars 2, the Soviet spaceprobe for Mars HMS Mars (1746), the second ship named HMS Mars , the second ship named USS Mars the second volume of Fuyumi Soryo's Mars (manga) MARS II / LRU / MLRS-I, a European variant of the M270 Multiple Launch Rocket System Methionine–tRNA ligase, mitochondrial, an enzyme encoded by the MARS2 gene
See also Mars (disambiguation) Mars 2M (disambiguation) Mars 2MV-4 (disambiguation)