Organizers
- Municipality of the District of Lunenburg
- Municipality of the District of Shelburne
- Murchison Elementary School
- Murfreesboro Rotary Club
- Murphy Creek
- Murphy Creek Golf Course
- Murphy Music Camp
- Murphy's Golf Academy
- Murray Bridge Speedway
- Murray-Calloway Co. Parks
- Murray-Calloway Parks Dept
- Murrells Inlet 2020
- Murrieta Valley Pop Warner
- Muscatine Parks and Recreation Department
- Muscatine Youth Baseball
- Muscle Acre Events
- Muscle Shoals Civitans
- Muscular Dystrophy Association
- Muscular Dystrophy UK
- Museum of Flight ACE
- Museum of the Southwest
- Music Center of the Northwest
- Music In Plymouth 5K
- Music in the Somerset Hills
- Music Institute at Carrollton Square
- Music Masters Camps
- Musical Munchkins
- Musically Minded, Inc
- MusicBreeds
- Musicollaborative
- Musika
- Musika Lessons Inc.
- Muskego Lakes CC
- Muskegon Catholic Central
- Muslim Association of Puget Sound
- Muslim Youth Camp
- Muslim Youth of Grand Blanc
- Muslimahs Endure
- Mustangs Baseball
- Muswell Hill Football Academy
- Mutt Mudders
- Mutty Trails Events
- MVHS - Angels Run
- MVP Athletic Club
- MVP Athletic Club, Rockford
- MVP Sports Academy
- MVP Sports Club - Holland
- MVT Event Services
- MWI Cycling Club, Inc
- MWROC Music Festival
