0M
# 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
   * $1E0m^2,$ an abbreviation for square metre, an order of magnitude for expressing area
   * $1E0m^3,$ 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
