This is a chronological listing of the United States senators from Connecticut. United States senators are popularly elected, for a six-year term, beginning January 3. Elections are held the first Tuesday after November 1. Before 1914, they were chosen by the Connecticut General Assembly, and before 1935, their terms began March 4. Its current U.S. senators are Democrats Richard Blumenthal (serving since 2011) and Chris Murphy (serving since 2013). Chris Dodd is Connecticut's longest-serving senator (1981–2011).

List of senators

! rowspan=7 | 1 ! 1 ! rowspan=2 | 2 ! 3 ! rowspan=2 | 4 ! rowspan=8 | 5 ! rowspan=10 | 2 ! rowspan=6 | 6 ! rowspan=7 | 3 ! rowspan=3 | 7 ! rowspan=5 | 8 ! rowspan=2 | 4 ! rowspan=3 | 5 ! rowspan=3 | 9 ! rowspan=3 | 6 ! rowspan=5 | 10 ! rowspan=2 | 7 ! rowspan=2 | 8 ! rowspan=5 | 11 ! 9 ! rowspan=5 | 10 ! rowspan=5 | 12 ! rowspan=2 | 11 ! rowspan=4 | 13 ! rowspan=4 | 12 ! 14 ! rowspan=6 | 15 ! rowspan=6 | 13 ! rowspan=6 | 16 ! rowspan=3 | 14 ! rowspan=7 | 15 ! 17 ! rowspan=2 | 18 ! rowspan=13 | 19 ! rowspan=13 | 16 ! rowspan=4 | 17 ! rowspan=10 | 20 ! rowspan=11 | 18 ! rowspan=5 | 21 ! rowspan=3 | 19 ! rowspan=3 | 22 ! rowspan=6 | 20 ! rowspan=3 | 23 ! rowspan=9 | 24 ! 21 ! rowspan=3 | 22 ! rowspan=5 | 23 ! 25 ! rowspan=6 | 26 ! rowspan=3 | 24 ! rowspan=6 | 25 ! rowspan=9 | 27 ! rowspan=9 | 26 ! rowspan=15 | 28 ! rowspan=12 | 27 ! rowspan=9 | 29 ! rowspan=9 | 28