- Los Alamitos Medical Center
- Los Alamos County
- Los Alamos Technical Associates
- Los Angeles Air Force, Asian Pacific American Program
- Los Angeles Airport Marriott
- Los Angeles Athletic Club
- Los Angeles Community Hospital
- Los Angeles Community Hospital at Norwalk
- Los Angeles County Department of Mental Health
- Los Robles Regional Medical Center
- Loudermilk Conference Center
- Loudon County CBV
- Louis B. Stokes Cleveland VA Medical Center
- Louisa County
- Louisiana Department of Health and Hospitals, Research and Development Section
- Louisiana Hospital Association
- Louisiana Housing Finance Agency
- Louisiana Organ Procurement Agency
- Louisiana State University
- Louisiana-Pacific
- Louisville East - Fairfield Inn by Marriott
- Lourdes College
- Lourdes of Burlington County
- Lousiana Hospital Association
- Love and Company
- Lovelace Medical Center
- Lovelock Volunteer Fire Department
- Low Country Healthy Start
- Lowe's
- Lowell General Hospital - Main Campus
- Lowell General Hospital Saints Campus
- Lowenstein Sandler
- Lower Bucks Hospital
- Lower Chattahouchee AAA
- Lower Colorado River
- Lowndes County
- Loyola University Chicago
- Loyola University Chicago Students for Organ Donation
- Loyola University Medical Center
- Loyola University Medical Center - Heart Transplantation
- LPA Sacramento, Inc.
- LRG, Inc.
- LSA-SQL Laboratory Sciences of AZ
- LSS at Heisinger Bluff
- LSSI Library Systems and Services
- LStar Management
- LSU Health Shreveport
- LTC Alliance, LLC
- LTD Management Company, Inc.
- Lubbock Area United Way, Inc.