Lewis Hanback (March 27, 1839 – September 7, 1897) was a U.S. Representative from Kansas.

Lewis Hanback
From 1883's History of the State of Kansas
Member of the U.S. House of Representatives from Kansas's 6th district
In office March 4, 1885 – March 3, 1887
Preceded by	District created
Succeeded by	Erastus J. Turner
Member of the U.S. House of Representatives from Kansas's At-large district
In office March 4, 1883 – March 3, 1885
Preceded by	David Perley Lowe
Succeeded by	William A. Harris
Personal details
Born	March 27, 1839 Winchester, Illinois
Died	September 7, 1897(1897-09-07) (aged 58) Kansas City, Kansas
Resting place	Topeka Cemetery, Topeka, Kansas
Political party	Republican
Military service
Rank	Brigade Inspector
Engagement	Civil War

Born in Winchester, Illinois, Hanback attended the common schools and Cherry Grove Seminary in Knox County, Illinois, for three years. He taught school in Morgan County, Illinois, in 1860 and 1861. During the Civil War he enlisted as a private in the Illinois Volunteer Infantry and was promoted to brigade inspector. He studied law in Albany, New York. He returned to Illinois and from there moved to Topeka, Kansas. He was admitted to the bar in 1865 and practiced.

Hanback was elected Justice of the Peace in 1867. He was Probate judge of Shawnee County from 1868-1872. He served as assistant chief clerk of the State house of representatives. He served as assistant secretary of the State senate in 1877. He served as assistant United States district attorney of Kansas 1877-1879. He served as Receiver of public moneys at Salina, Kansas.

Hanback was elected as a Republican to the Forty-eighth and Forty-ninth Congresses (March 4, 1883 – March 3, 1887). He was an unsuccessful candidate for re-election to the Fiftieth Congress. He resumed the practice of law. He died in Kansas City, Kansas, September 7, 1897. He was interred in Topeka Cemetery, Topeka, Kansas.