Theron Seward Winship (March 25, 1839 - June 30, 1892) was a Lieutenant in the U.S. Army during the American Civil War. Born in Ohio, he joined the 29th Ohio Infantry as a First Lieutenant on September 16, 1861. Although he was present during the Antietam Campaign his unit was held in reserve and he did not see any action. He later resigned on January 26, 1863.