The 1918 South Carolina United States Senate special election was held on November 5, 1918 simultaneously with the regular senate election to select the U.S. Senator from the state of South Carolina to serve the remainder of the term for the 65th Congress. The election resulted from the death of Senator Benjamin Tillman on July 3, 1918. William P. Pollock won the Democratic primary and was unopposed in the general election to win the remaining four months of the term.
