M53, M-53, or M.53 may refer to:
==Military== M53 155mm Self-Propelled Gun, an American-made tracked, self-propelled gun M53, a Hungarian submachine gun developed from the Soviet PPS-43 submachine gun; see PPS submachine gun#Variants Macchi M.53, an Italian military reconnaissance floatplane of 1928 Snecma M53, a French afterburning turbofan engine developed for the Dassault Mirage 2000 fighter M53, Yugoslav copy of the MG42 machine gun M53 Yugoslavian army compass
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).