1940 United States presidential election in California

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1940 United States presidential election in California
	November 5, 1940
Turnout	81.44% (of registered voters) 1.92 pp ; 78.32% (of eligible voters) 7.76 pp
Roosevelt 40–50% 50–60% 60–70% 70–80%	Willkie 50–60% 60–70%
President before election; Franklin D. Roosevelt; Democratic	Elected President ; Franklin D. Roosevelt; Democratic

The 1940 United States presidential election in California took place on November 5, 1940, as part of the 1940 United States presidential election. State voters chose 22 representatives, or electors, to the Electoral College, who voted for president and vice president.

California voted for the Democratic incumbent, Franklin Roosevelt, over the Republican challenger, businessman Wendell Willkie.

Willkie did nonetheless make considerable gains vis-à-vis the previous Republican nominee, Alf Landon, who remains the solitary Republican nominee to not carry a single county in the state. Willkie carried seven counties scattered across the state and gained ten percentage points on Landon's performance.

This is the last election where the Democrats won Sutter County, which, as of the 2020 presidential election, stands as the longest run voting for one party by any California county. Mono County would not vote Democratic again until John Kerry in 2004.