Erastus Johnson Turner (December 26, 1846 – February 10, 1933) was a U.S. Representative from Kansas.
Born in Lockport, Pennsylvania, Turner attended college in Henry, Illinois, in 1859 and 1860. He moved to Bloomfield, Iowa, in 1860. Enlisted in Company E, 13th Iowa Volunteer Infantry Regiment, in 1864 and served until the close of the Civil War. He attended Adrian (Michigan) College 1866-1868. He was admitted to the bar in 1871 and commenced practice at Bloomfield, Iowa. He moved to Hoxie, Kansas, in 1879 and resumed the practice of law. He served as member of the Kansas House of Representatives 1881-1885. Secretary of the Kansas Board of Railroad Commissioners from April 1, 1883, to August 1, 1886.