The 1931 United States Senate special election in Vermont took place on March 31, 1931. Republican Warren Austin was elected to the United States Senate to serve the remainder of the deceased Frank L. Greene's term, defeating Democratic candidate Stephen M. Driscoll. Austin replaced Frank C. Partridge, who was appointed to fill the seat until a special election could be held and was defeated in the special primary.
Frank L. Greene was elected to represent Vermont in the United States Senate in 1922 and re-elected in 1928. On December 17, 1930, Senator Greene died from complications during hernia surgery.
On December 23, Governor John E. Weeks appointed Frank C. Partridge to fill the vacant seat until a successor could be duly elected. A special election to complete the remainder of Greene's unexpired term (until March 1935) was scheduled for March 31, 1931.
