Lewis Winans Ross (December 8, 1812 - October 20, 1895) was a U.S. Representative from Illinois. Born near Seneca Falls, New York, Ross moved to Illinois and settled in Lewistown. He completed preparatory studies and attended Illinois College at Jacksonville in 1837. He studied law. He was admitted to the bar in 1839 and commenced practice in Lewistown, Illinois. He served as member of the State house of representatives in 1840, 1841, 1844, and 1845. He served as member of the State constitutional conventions in 1861 and 1870. Ross was elected as a Democrat to the Thirty-eighth, Thirty-ninth, and Fortieth Congresses (March 4, 1863-March 3, 1869). He was not a candidate for renomination in 1868. He resumed the practice of law. He died in Lewistown, Illinois, October 20, 1895. He was interred in Oak Hill Cemetery.
