Cognomen M-S (M-S 
) , all around the world, is a rare family name. The family name M-S is habitual in Taiwan, where it is a rare surname, New Zealand, where it is a very rare surname, and Australia. Measured by absolute frequency, it is commonest in Taiwan, China, and Australia. Also, M-S is the forename as well as the last name. Parts of the name also exists independently as a first name M, and a first name S.