M77

M77 or M-77 may refer to:


 * M-77 (Michigan highway), a state highway in Michigan
 * M77 motorway, a motorway in Scotland
 * M-77 pistol, a semi-automatic pistol
 * Miles M.77 Sparrowjet, a 1950 twin-engined jet-powered racing aeroplane
 * Zastava M77, a Serbian assault rifle
 * Ruger M77, a bolt-action rifle
 * Messier 77, a spiral galaxy in the constellation Cetus
 * M-77 Oganj, a Serbian multiple rocket launcher
 * Dual-Purpose Improved Conventional Munition, M77 DPICM submunition