The 1952 United States Senate election in Wisconsin was held on November 4, 1952.
Incumbent Republican U.S. Senator Joseph McCarthy was elected to a second term in office over Democrat Thomas E. Fairchild. McCarthy did not complete his term; he died on May 2, 1957 and was succeeded by William Proxmire in a special election.
As of 2022, this is the last time the Republicans won the Class 1 senate seat in Wisconsin.
The 1952 race was much closer than McCarthy's 1946 victory, and he trailed Republican presidential candidate Dwight D. Eisenhower by around 100,000 votes in the state.