- Lloyd Flanders
- Lloyd, Inc.
- Local Initiative Funding Partners Program RWJ)
- Local Tucson Boy Scout Troop
- Lochlyn Company
- Lockheed Martin
- Lockheed Martin Space Operations
- Lodge at Giants Ridge, Biwabik
- Lodgian
- Lodi Memorial Hospital
- Loew's
- Loews Hotels
- Loews L'Enfant Plaza Hotel
- Loews Philadelphia Hotel
- Logan County
- Logan Fire Department
- Logan Police Department
- Logan Regional Hospital
- Logan Regional Medical Center
- Logan Regional Memorial Center
- Logansport Memorial Hospital
- Logistics Management Institute
- Logix Communications
- Loma Linda University Children's Hospital
- Loma Linda University Medical Center
- Loma Linda University Medical Center - Murrieta
- Lompoc Valley Medical Center
- London Community College
- Lone Star Transplant Association
- Lone Star Truck Center
- Lonesome Pine Hospital
- Long Automotive Group
- Long Beach Area Convention and Visitors Bureau
- Long Beach Area Convention and Visitors Bureau-Fairfax
- Long Beach Area Convention and Visitors Bureau-Woodbridge
- Long Beach Medical Center
- Long Beach Memorial Medical Center
- Long Island Head Start
- Long Island Jewish Forest Hills
- Long Island Jewish Medical Center
- Long Island Jewish Valley Stream
- Long Island Marriott
- Long Island State Veterans Home at Stonybrook University
- Long Reality Co.
- Longboat Key Club and Resort
- Longmont United Hospital
- Lopez Negrete Communications Inc.
- Lord Corporation
- Loring Hospital
- Lorllard, Inc