- Maharaja T20 Trophy
- Major Championships (Golf)
- Major Clubs Limited Over Tournament
- Major Clubs T20 Tournament
- Major League Cricket
- Major League Rugby
- Major League Tournament
- Malaysia Tri-Nation T20I Series
- Marathons
- MAX60 Caribbean
- Men's African Games Cricket
- Men's FIH Pro League
- Men's Hockey World Cup
- Men's T20 World Cup warm-up matches
- Mixed Martial Arts Events
- MLB
- MLS
- Modern Pentathlon Events
- Mosconi Cup
- MotoE
- MotoGP
- Motorcycle Road Racing