Sidney Johnson "Fiddlin' Sid" Harkreader (February 26, 1898 — March 19, 1988) was an American Old-time fiddle player and string band leader. He was an early member of the Grand Ole Opry, at first accompanying banjoist Uncle Dave Macon and later performing on the program with his own band. In the 1940s, Harkreader formed and briefly toured with the Western band "The Round-Up Gang" before returning again to the Opry. Harkreader is buried at Caraway Cemetery in Gladeville.