M9
- 9M (disambiguation)
- AITO M9
- ATC code M09
- Apple motion coprocessors
- Beretta M9
- Bestune M9
- Boc Maxima
- Coomera Connector
- DF-15
- Danger Man
- Escherichia coli
- Geely Galaxy M9
- Grigorovich M-9
- HTC One M9
- Highway M09 (Ukraine)
- Leica M9
- M-9 (Michigan highway)
- M9 (Cape Town)
- M9 (Durban)
- M9 (East London)
- M9 (Istanbul Metro)
- M9 (Johannesburg)
- M9 (New York City bus)
- M9 (Port Elizabeth)
- M9 (Pretoria)
- M9 (railcar)
- M9 anti-tank rocket launcher
- M9 armored combat earthmover
- M9 bayonet
- M9 flamethrower
- M9 gun director
- M9 half-track
- M9 highway (Russia)
- M9 motorway (Ireland)
- M9 motorway (Pakistan)
- M9 motorway (Scotland)
- M9 road (Malawi)
- M9 road (Zambia)
- Meizu M9
- Messier 9
- Miles M.9 Master
- Moscow Internet Exchange
- Motor Sich Airlines
- Sri Lanka Railways M9
- T40/M9 tank destroyer