Roy Radebaugh (February 22, 1881 – January 17, 1945) was a Major League Baseball pitcher. Radebaugh played for the St. Louis Cardinals in 1911. In 2 career games, he had a 0–0 record with a 2.70 ERA. He batted and threw right-handed.
Radebaugh was born in Champaign, Illinois, and died in Cedar Rapids, Iowa.