Donald Elliott Heinkel (born October 20, 1959) is a retired Major League Baseball pitcher.

He played during two seasons at the Major League level for the Detroit Tigers and St. Louis Cardinals.

Heinkel notched his lone major league save on April 29, 1988.

Heinkel played his first professional season with their Rookie league Bristol Tigers, Class A-Advanced Lakeland Tigers, and Double-A Birmingham Barons in 1982, and his last with the San Diego Padres' Double-A Wichita Wranglers in 1993.

This biographical article relating to an American baseball pitcher born in the 1950s is a stub.