- Holiday Inn, Richfield
- Holzer Clinic Jackson
- Holzer Medical Center-Jackson
- Homewood Suites, Columbus
- Homewood Suites, Fairborn
- Honda of American Mfg.
- Howard Wershbale and Company
- Huffy Corporation
- Hyatt Regency Cincinnati
- Hyway Trucking
- Indu and Raj Soin Medical Center
- International Steel Group, Inc.
- International Truck and Engine Corp
- Iron Workers, Local 17
- Jackson Save A lot
- Japanese American Citizens League - Dayton
- Jefferson County Dept. of Health and Human Services
- Jefferson County Dept. of Job and Family Services
- Jewish Family Service, Toledo
- Jo-Ann Stores Inc.
- John Carroll University
- Joint Township District Memorial Hospital
- Kaufmann's Distribution Center
- Kent State University
- Kent State University, College of Nursing
- Kettering Health Network
- Kettering Medical Center
- Keys Acquisiton Group
- Knights of Columbus Council 626
- Knowledge Now
- Knox Community Hospital
- Knox County Board of Commissioners
- KraftMaid Cabinetry, Inc
- Kuhlman Corporation
- Laborers, Local 894
- Lake Health
- Lancaster Pollard
- Laurel Lake Retirement Community Inc.
- LDT Systems, Inc.
- LeaderStat
- LexisNexis
- Licking Memorial Hospital
- Life Connection of Ohio - Dayton Regional Office
- LifeBanc
- LifeCenter Organ Donor Network
- Lifeline of Ohio
- Lifeline of Ohio
- Lifeline of Ohio Organ Procurement Agency, Inc.
- Lima Engine Plant UAW - Ford FSLC
- Lima Memorial Health System