1970 United States Senate election in California

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1970 United States Senate election in California
	County results; Tunney: 40–50% 50–60% 60–70% ; Murphy: 40–50% 50–60%
U.S. senator before election; George Murphy; Republican	Elected U.S. Senator ; John V. Tunney; Democratic

The 1970 United States Senate election in California was held on November 3, 1970.

Incumbent Republican Senator George Murphy lost re-election to a second term to Democratic Congressman John V. Tunney. This election was the first since 1860 in which California sent two Democrats to the U.S. Senate.