M63 or M-63 may refer to:
*
M63 mine, a French anti-personnel mine
*
M63 motorway, a former designation for a road in Greater Manchester
*
M-63 Plamen a multiple rocket launcher
*
M-63 (Michigan highway), a state highway in Michigan
*
Messier 63, a spiral galaxy in the constellation Canes Venatici
*
Stoner M63, an assault rifle/light machine gun
*A model of
Mercedes AMG
*A developed version of the M62 (later designated as
Shvetsov ASh-62) aero-engine
{{Letter-NumberCombDisambig