M12
- 10.5 cm Feldhaubitze M.12
- BMW M12
- Beretta M12
- Beriev Be-12
- Grigorovich M-12
- Highway M12 (Ukraine)
- M-12 (Michigan highway)
- M-12 motorway (Pakistan)
- M12 (Bloemfontein)
- M12 (Cape Town)
- M12 (Durban)
- M12 (East London)
- M12 (Istanbul Metro)
- M12 (New York City bus)
- M12 (Port Elizabeth)
- M12 (Pretoria)
- M12 (artist collective)
- M12 (venture capital)
- M12 Gun Motor Carriage
- M12 Motorway (Sydney)
- M12 bolt
- M12 connector
- M12 highway (Russia)
- M12 motorway
- M12 motorway (Great Britain)
- M12 road (Malawi)
- M12 road (Zambia)
- Macchi M.12
- Magic 2012
- Mathieu group M12
- McLaren M12
- Mercedes V6 hybrid Formula One power unit
- Messier 12
- Miles M.12 Mohawk
- Noble M12
- Progress M-12
- Progress M-12M
- S-mount (CCTV lens)
- Steyr M1912
- Vector M12
- Winchester Model 1912
- Zastava M12 Black Spear