Organizers
- Kevin's Cause
- Kevin's Run
- Key Elementary School ASEP
- Key Largo Bike and Adventure Tour
- Key Learning Center
- Key School at Carolina Day School
- Key School PTO
- Key Sports
- Key West Southernmost Runners
- Keys to the Music
- Keystone Science School
- Keystone South Summer Camp
- Keystone Warriors
- Keystone Wounded Warriors
- Keystone WOW Youth Camp Inc.
- KG Lax LLC
- Khayamandi Foundation
- Kick It Academy LLC
- Kick Start Events
- Kickass Obstacle Race
- Kicker Kutie Dance Camps
- Kickmaster's Coast Athletic Club
- KickOff Coaching
- KickStart Athletics, LLC
- Kid Art
- Kid Explorer
- Kid Explorer Camps
- Kid Explorer Club Corporation
- Kid First Baseball
- Kid Koderz
- Kid One Transport
- Kid Zone and Mid Zone
- Kiddos' Clubhouse
- Kiddy School
- Kidney Foundation of the Greater Chattanooga Area
- Kidovations
- Kidovations, Inc
- Kid-Possible Summer Camps
- Kids & Culture Camp
- Kids 4 Kids Leadership
- Kids 4 Kids Leadership Program
- Kids Academy
- Kids Adventure Games LLC
- Kids Against Hunger - Fox Valley (in Roselle)
- Kids at Art
- Kids Can Code
- Kids Caring Foundation/ SPARC
- Kids' Chance of Georgia, Inc
- Kids' Chance of Pennsylvania
- Kids Clay Room
