The 1944 United States Senate election in Connecticut was held on November 7, 1944.
Incumbent Republican Senator John A. Danaher ran for re-election to a second term in office but was defeated by Democratic attorney Brien McMahon.
Senator Danaher was re-nominated by acclamation at the August 8 convention in Hartford. In his acceptance speech, he accused President Roosevelt of attempting to institute "one-man government."
McMahon was nominated by acclamation at the August 5 convention in Hartford.