Stephen Mix Mitchell (December 9, 1743 – died September 30, 1835) was an American lawyer, jurist, and statesman from Wethersfield, Connecticut.

He represented Connecticut in the Continental Congress and the U.S. Senate and was chief justice of the state's Supreme Court.

[5] When Roger Sherman died in 1793, Governor Huntington appointed Mitchell to the United States Senate, where he served from December 2, 1793, to March 3, 1795.

[6] He did not seek re-election in 1794, but returned home to accept a seat on the Connecticut Supreme Court beginning in 1795 until he was elevated to Chief Justice in 1807 and served there until his retirement to Wethersfield in 1814 when he became legally disqualified by age.

[7] Mitchell was a presidential elector on the Federalist ticket in 1800 and a delegate to Connecticut state constitutional convention, 1818.