M15
- Anti-austerity movement in Spain
- GER Class M15
- Grigorovich M-15
- Hunter Expressway
- James Tucker Airport
- M-15 (Michigan highway)
- M15 (Cape Town)
- M15 (New York City bus)
- M15 (Port Elizabeth)
- M15 Half-track
- M15 mine
- M15 motorway (Great Britain)
- M15 motorway (Hungary)
- M15 pistol
- M15 rifle
- M15 road (Bloemfontein)
- M15 road (Durban)
- M15 road (East London)
- M15 road (Pretoria)
- M15 road (Zambia)
- M15/42 tank
- MI5
- Magic 2015
- Markku Uusipaavalniemi
- Messier 15
- Model 15 (disambiguation)
- Model M
- Noble M15
- PZL M-15 Belphegor