0M

0M (zero M) or 0-M may refer to:


 * 0m, an abbreviation for zero meridian, or Prime Meridian
 * 0m, an abbreviation in measurement for 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
 * 0-m, an abbreviation for 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