Abner Lewis (August 17, 1801 – October 12, 1879) was a U.S. Representative, judge and attorney from Jamestown, New York and Winona, Minnesota.
He was raised in Chautauqua County, New York, studied law with Abner Hazeltine in Jamestown, was admitted to the bar, and commenced practice in Panama.
In 1856 Lewis moved to Winona, Minnesota, where he practiced law and was active in several businesses, including the city's transit railroad.
Lewis was also involved in several civic causes, including construction of the State Normal School, Minnesota's academy for training teachers.
During the American Civil War Lewis was a Voting Commissioner, responsible for enabling Union soldiers from western states to cast ballots while in the field.