1940 United States Senate election in Florida

1936 U.S. Senate Democratic primary in Florida
	Andrews: 50–60% 60–70% 70–80% 80–90%; Carter: 50–60% 60–70%
U.S. senator before election; Charles O. Andrews; Democratic	Elected U.S. Senator ; Charles O. Andrews; Democratic

The 1940 United States Senate election in Florida was held on November 5, 1940.

Incumbent Senator Charles O. Andrews failed to achieve a majority in the May 7 primary election, but defeated Jerry W. Carter easily in a run-off on May 28. Andrews won the November general election without an opponent.