Hardlines Design Company has a variety of clients and have successfully worked with several federal, state, and municipal organizations across the county.
National Park Service
- Northeast Regional Office
- Southeast Regional Office
- Inter-Mountain Regional Office
- Pacific Regional Office
- National Capital Regional Office
U.S. Army Corps of Engineers
- Huntington District
- Louisville District
- New England District
- Omaha District
- Pittsburgh District
- Seattle District
- Wilmington District
U.S. Department of Agriculture
- Forest Service
- Agricultural Research Service
U.S. Air Force
- Air Force Materiel Command
- 88th Air Base Wing
- Air Force Center for Environmental Excellence
Naval Facilities Engineering Command
- Atlantic Division
- MidLant Division
- Midwest Division
- Southern Division
- Southwest Division
U.S. Department of Labor
- Mine Safety and Health Administration
Ohio and Local Governments
- Ohio Department of Transportation
- Ohio Department of Alcohol and Drug Addiction Services
- Ohio Department of Mental Retardation/Developmental Disabilities (MR/DD)
- Franklin County ADAMH Board
- City of Heath
- City of Gambier
- City of Columbus
- City of Mount Vernon
- Clinton County
- Delaware County
Other Organizations
- CAPA
- City of Columbus Public Schools
- City of Wichita, Kansas
- Columbus Children’s Theatre
- Columbus Foundation
- Columbus Regional Airport Authority
- Eleutherian College, Inc.
- Fairborn Performing Arts and Cultural Association
- Friends of the Crooked River
- Grange Mutual Insurance Casualty Company
- Hocking College
- Lincoln Theatre Association
- Mansfield Reformatory Preservation Society
- Maryland State Highway Administration
- Metropolitan Park District of the Toledo Area
- Nationwide Children’s Hospital
- Nationwide Insurance
- Ohio University
- South Fountain Preservation, Inc.
- The Ohio Historical Society
- The Ohio State University
- Woodward Development Corporation
- YWCA
