John G. Gilbert (January 8, 1864 – November 12, 1903) was a Major League Baseball shortstop.

He played in two games for the Pittsburgh Alleghenys, both on June 23, 1890.

He started both ends of a doubleheader against the Philadelphia Phillies, collecting eight at bats without a hit.

His brother Harry H. Gilbert was his teammate on that team.

This biographical article relating to a baseball shortstop is a stub.