1970 United States Senate election in Wyoming

The 1970 United States Senate election in Wyoming took place on November 3, 1970. Incumbent Democratic Senator Gale W. McGee ran for re-election to his third term. In a rematch of the 1964 election, he once again faced Republican John S. Wold, who at this time represented Wyoming in the U.S. House of Representatives. 1970 proved to be a fairly strong year for Wyoming Republicans; Governor Stanley Hathaway was re-elected in a landslide and the party won all of the other statewide offices. However, McGee proved popular, and managed to increase his margin from 1964, beating Wold by a solid 56% to 44% margin.

As of the 2024 Senate election, this remains the last time that a Democratic candidate has won a United States Senate election in Wyoming; the state is tied with Utah for the second-longest Senate Republican winning streak, after Kansas.