The 1930 United States Senate election in Oklahoma took place on November 4, 1930. Incumbent Republican Senator William B. Pine ran for re-election to a second term. In the Democratic primary, former U.S. Senator Thomas Gore emerged victorious in a crowded Democratic primary that included three former governors and one of the first female candidates for statewide office. Gore won a slim plurality in the initial election, and defeated C. J. Wrightsman, an oilman from Tulsa, in the runoff by a wide margin. In the general election, aided by the national Democratic landslide, Gore narrowly defeated Pine, returning to the Senate for one final term.