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.