- Maccio's Dance Academy
- Magna Science Adventure Centre
- Maltby Diving Club
- Maltby Juniors Football Club
- Maltby Leisure Centre
- Maltby Library And Neighbourhood Hub
- Maltby Musical Theatre Group
- Manor Farm Drop In Parent And Toddler Group
- Manvers Waterfront Boat Club
- Margaret Huntley School Of Dance
- Marquis Wacky Warehouse
- Messy Church - Worship And Crafts For The Whole Family
- Millenium Boxing
- Millmoor Juniors Football Club
- Mini Messy Church
- Monk Bretton Priory
- Monkey Bizness Sheffield
- Moo Music Worksop
- Mowbray Gardens Library And Neighbourhood Hub
- Music Bugs Rotherham