R-Z
- Richfield Historical Society
- Rock & Roll Hall of Fame
- Rockefeller Park Greenhouse
- Romanian Ethnic Art Museum
- Shaker Historical Society & Museum
- Solon Historical Society
- South Euclid - Lyndhurst Historical Museum
- SPACES
- Stan Hywet Hall & Gardens
- Strongsville Historical Society
- Suffield Township Historical Society
- Summit County Historical Society
- Summit Metro Parks
- The A.R.K.
- The Children's Museum of Cleveland
- The Cleveland Museum of Art
- The Cleveland Orchestra
- The Geauga County Historical Society Century Village Museum
- The Holden Arboretum
- The Spirit of '76 Museum
- The Temple Museum of Jewish Art, Religion & Culture
- Twinsburg Historical Society
- Ukrainian Museum-Archives, Inc.
- University Circle Inc.
- USS Cod Submarine Memorial
- West Park Historical Society
- Western Reserve Fire Museum and Education Center
- Westlake Historical Society
- Weymouth Preservation Society
- York Township Historical Society