0M (zero M) or 0-M may refer to:
Zero meridian, or Prime Meridian Zero metres 1E0m2, an abbreviation for square metre, an order of magnitude for expressing area 1E0m3, an abbreviation for cubic metre, an order of magnitude for expressing volume Zero manifold Several terms related to 0 (number): Zero map; see constant function Zero morphism, a kind of morphism in category theory Zero matrix, a matrix with all entries being zero Agent Zero-M, a range of secret agent toy weapons by Mattel Toys
See also M0 (disambiguation) Om (disambiguation)