John Gillis Townsend (born May 31, 1871) was a Republican senator representing the state of Delaware in the United States Senate. A historical member of Congress, he is recorded under the bioguide identifier T000335. Townsend’s federal legislative career is the primary focus of the available record, and he is noted specifically for his role as a U.S. senator rather than for service in the House of Representatives or other elected offices.

Townsend began his Senate service on April 15, 1929, serving as a senator from Delaware until January 3, 1941. During this period, he completed two terms in office. His tenure placed him in the Senate through the late 1920s and the entire decade of the 1930s, a time of significant national economic and political change. Identified in the metadata as a former officeholder, Townsend’s public profile is centered on this twelve-year span in the Senate, with no additional committee assignments, contact details, or official web presence documented in the available information.