CM, Cm, cM or cm may stand for: CM · The Cross Movement, a Christian hip-hop group · A Member of the Order of Canada, as the post-nominal letters "C.M." · Apollo Command/Service Module (command module is one half) · Cameroon, which has the ISO and FIPS country code "CM" · Candidate Master, an international chess title · Center of mass, the point at which an object's mass seems to be concentrated · Chelmsford, which has the British post code "CM" · Chief minister, the elected head of government of a sub-national state · Correio da Manhã, a Portuguese daily newspaper · Circular mil, a unit of area equal to the area of a circle with a diameter of one mil · Commercial, it is used in the Japanese language as an acronym for a TV commercial · Common metre, an iambic metre consisting of four lines of length 8,