M43

M43 may refer to:


 * M43 BZ cluster bomb
 * M43 field cap, a piece of German headgear
 * M-43 (Michigan highway), a state highway in Michigan
 * M43 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa
 * M43 (Pretoria), a Metropolitan Route in Pretoria, South Africa
 * M43 (Durban), a Metropolitan Route near Durban, South Africa
 * M43 mortar, a Soviet weapon
 * M43 Howitzer Motor Carriage, an American self-propelled artillery vehicle
 * M43 motorway (Hungary), a Hungarian Motorway
 * BMW M43, a 1991 automobile piston engine
 * Dodge M43, the ambulance variant of the Dodge M37
 * Messier 43, a nebula near the Orion Nebula
 * M43, the original designation for the 7.62×39mm Soviet carbine and rifle round
 * the 43rd Mersenne prime
 * Micro Four Thirds system lens mount standard for mirrorless interchangeable lens digital cameras
 * Model 43 grenade, a German hand grenade introduced during World War II
 * M43 Postcode in Greater Manchester