Timothy O. Howe (1816–1883) was a U.S. Senator from Wisconsin from 1861 to 1879. Senator Howe may also refer to:
Carleton G. Howe (1898–1993), Vermont State Senate George Howe (attorney) (1824–1888), Vermont State Senate Jeff Howe (born 1959), Minnesota State Senate John Howe (Minnesota politician) (born 1963), Minnesota State Senate Richard C. Howe (born 1924), Utah State Senate