| Election Name: | 1952 United States Senate special election in Connecticut |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1950 United States Senate election in Connecticut |
| Previous Year: | 1950 |
| Next Election: | 1956 United States Senate election in Connecticut |
| Next Year: | 1956 |
| Election Date: | November 4, 1952 |
| Image1: | File:PrescottBush.jpg |
| Nominee1: | Prescott Bush |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 559,465 |
| Percentage1: | 51.17% |
| Nominee2: | Abraham Ribicoff |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 530,505 |
| Percentage2: | 48.52% |
| Map Size: | 200px |
| U.S. Senator | |
| Before Election: | William A. Purtell |
| Before Party: | Republican Party (US) |
| After Election: | Prescott Bush |
| After Party: | Republican Party (US) |
The 1952 United States Senate special election in Connecticut was held on November 4, 1952, to fill the vacancy left by the death of Brien McMahon.
Incumbent Senator Prescott Bush, who won the special election, was later re-elected in 1956 to a full term in office over Democratic U.S. Representative Thomas J. Dodd.
Senator Brien McMahon, whose term in office was scheduled to expire in 1957, died on July 28, 1952. William A. Purtell, who was already the Republican nominee for Connecticut's other Senate seat in a regularly scheduled election for the term expiring in 1959, was appointed to fill the seat until a successor could be duly elected. Purtell continued to stand in the regular election rather than run for the remainder of McMahon's term.