Organizers
- All Star Activities
- All Star Basketball
- All Star Cross Country Camp
- All Star Events
- All Star Hoops
- All Star Lax Camps
- All Star Sports
- All Star Surf Camp
- All Stars CoachCat Kids Tennis Club
- All Stars Tennis
- All Things Art Studio
- All Things Fun Sports!
- All Things Soccer LLC
- All World Sports
- Allandelle Girl Camp
- Alleghany Wellness Center
- Allegheny County Department of Human Services
- Allegheny County Parks
- Allegheny East Conference
- Allegheny North Swim Club
- Alliance Area Family YMCA
- Alliance for the Arts
- 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
