Roy Allen Hartzell (July 6, 1881 – November 6, 1961), played in Major League Baseball from 1906 to 1916.

James G. Hartzell was a Civil War veteran and died and is buried in California.

Roy Hartzell played baseball and football in the Denver area.

Hartzell was 24 years old when he played his first game in the big leagues on April 17, 1906, with the St. Louis Browns.

Hartzell's 595 at-bats for the Browns led the American League in 1909, and his 91 RBI for New York in 1911 were the most by a player in the Yankees' first 13 years.