Organizers
- Alliance Française de Los Angeles
- Alliance Francaise of Toronto
- Alliance Recreation Center
- Alliance Tennis Academy
- All-Out Multicourse Productions
- Alloy Lacrosse
- ALL-PRO Lineman Camp LLC
- All-Shore Softball Association
- All-Star Baseball
- ALL-STAR CLASSIC
- All-Star Kids Company Summer Programs
- Allstar Productions
- All-Tournament Players Park
- ALM Sports, LLC
- Alma College
- Alma G. Davis Foundation
- Almaden Riptide
- Almaden Valley Athletic Club
- Aloha Tournaments
- alondra golf course
- Alonzo King LINES Ballet
- Alpenglow Community Education Society
- Alpha & Omega Sports
- Alpha Beta Omega Chapter of Alpha Kappa Alpha Sorority, Inc.
- Alpha Centurion Runners and Walkers
- Alpha Chi Omega
- Alpha Kappa Alpha Sorority INC, Theta Upsilon Omega Chapter
- Alpha Kappa Alpha Sorority Inc. Rho Lambda Omega Chapter
- Alpha Kappa Psi
- Alpha Lambda Chapter, Alpha Phi Alpha
- Alpha Phi Alpha Xi Alpha Lambda Chapter - Ira Dorsey Scholarship Endowment Fund, Inc.
- Alpha Tau Delta
- Alpharetta Recreation and Parks
- Alpharetta Recreation Parks & Cultural Services Department
- Alpharetta Rotary
- Alpharetta Y
- Alpine Adventure Challenge
- Alpine Education Foundation
- Alpine Kiwanis Foundation
- Alpine Star Ltd
- ALS One
- ALSAC St Jude Children's Research Hospital
- ALSO Youth
- Altadena Golf Course
- Altamont 5K
- Altis Endurance LLC
- Altis Endurance Sports
- Altitude All Sports
- Alton Area Optimist
- Altoona Middle school
