St. Clair Township
- Benton County, Iowa
- East St. Clair Township, Bedford County, Pennsylvania
- Monona County, Iowa
- Saint Clair (disambiguation)
- Sinclair Township (disambiguation)
- St. Clair Township, Allegheny County, Pennsylvania
- St. Clair Township, Benton County, Iowa
- St. Clair Township, Butler County, Ohio
- St. Clair Township, Columbiana County, Ohio
- St. Clair Township, Monona County, Iowa
- St. Clair Township, Ontario
- St. Clair Township, Pennsylvania
- St. Clair Township, St. Clair County, Illinois
- St. Clair Township, St. Clair County, Michigan
- Upper St. Clair Township, Pennsylvania
- West St. Clair Township, Pennsylvania