M115 (disambiguation)

M115, M1 15 or M-115 may refer to:


 * M115 203 mm howitzer, a towed howitzer used by the United States Army
 * M115 bomb, a 500-pound anti-crop biological weapon
 * M-115 (Michigan highway), a state highway in Michigan
 * Mercedes-Benz M115 engine
 * M1 15, an electrical tram in Gothenburg, Sweden.