Senator Foster
- Abiel Foster
- Addison G. Foster
- Bill I. Foster
- Cassius Gaius Foster
- Dan Foster (politician)
- David J. Foster
- Dwight Foster (politician, born 1757)
- Ephraim H. Foster
- Harry C. Foster
- Henry A. Foster
- Ira Roe Foster
- James H. Foster
- Joseph Foster (politician)
- Joyce Foster
- Lafayette S. Foster
- Mike Foster (American politician)
- Murphy J. Foster
- Nathaniel Greene Foster
- Paulinus Foster
- Reuben Foster (politician)
- Robert Coleman Foster
- Stephen Clark Foster
- Stephen Clark Foster (Maine politician)
- Theodore Foster
- Wilder D. Foster
- William Foster (New York state senator)