| Election Name: | 1952 United States Senate election in Connecticut |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1950 United States Senate special election in Connecticut |
| Previous Year: | 1950 (special) |
| Next Election: | 1958 United States Senate election in Connecticut |
| Next Year: | 1958 |
| Election Date: | November 4, 1952 |
| Nominee1: | William A. Purtell |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 573,854 |
| Percentage1: | 52.48% |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 485,066 |
| Percentage2: | 44.36% |
| U.S. Senator | |
| Before Party: | Democratic Party (US) |
| After Party: | Republican Party (US) |
The 1952 United States Senate election in Connecticut was held on November 4, 1952. Incumbent Democratic Senator William Benton, who won a special election to complete the term of retiring Senator Raymond Baldwin, was defeated by Republican William A. Purtell after serving only 2 years.
During the campaign, Brien McMahon, the Class III Senator from Connecticut, died. Governor John Davis Lodge appointed Purtell, already the Republican nominee for this Class I seat, to serve as interim Senator in McMahon's place until a special election could be held.
Purtell supported General Dwight D. Eisenhower's campaign platform against "communism, corruption, and Korea."[1] Benton accused Purtell of being so conservative that he "makes Bob Taft look like a left-wing New Dealer."[2]