Organizers
- Mulberry School, Inc
- Mulgrave School
- Mullica Hill Women's Tri Club
- Multi-ACTIVE Holiday Courses Ltd
- Multi-Active Schools Ltd
- MULTICULTURAL YOUTH IN ACTION (MYIA)
- Multiple Myeloma Research Foundation
- MultiRace
- MultiRace
- Multisport Adv Ire
- Multisport Fitness, LLC
- Multisport Majic
- Munciana Volleyball Club
- Muncie Obedience Training Club
- Municipal Tennis Courts
- Municipality of Anchorage
- Municipality of Port Hope
- Municipality of Port Hope, Department of Parks, Recreation & Culture
- 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.
