George Henry Decker Jr. (June 16, 1947 – March 2, 2003) was an American Major League Baseball pitcher for the Chicago Cubs (1969–72), Minnesota Twins (1973–76) and Seattle Mariners (1979). He was born in Storm Lake, Iowa.
Decker was drafted in the 1965 MLB draft in the 9th round by the Chicago Cubs after playing at Petaluma High School in Petaluma, California.
He was traded along with Bill Hands and minor‐league pitcher Bob Maneely by the Cubs to the Minnesota Twins for Dave LaRoche on December 1, 1972.
He died at age 55 from head injuries following a fall at his home in Fraser, Michigan.