Robert Leon Gruber Jr. (born June 7, 1958) is a former American football offensive tackle in the National Football League (NFL) who played for the Green Bay Packers, Cleveland Browns, Miami Dolphins, Washington Redskins, Los Angeles Rams.

[1] Gruber played collegiate ball for the University of Pittsburgh before being drafted by the Los Angeles Rams in the 10th round of the 1980 NFL draft.

He is a graduate of Greenville High School and is originally from Greenville, Pennsylvania.

He has one daughter, Andrea Gruber, to his wife Deborah (deceased) He has two younger siblings, Pamela Redfoot and Brian Gruber.

This biographical article relating to an American football offensive lineman born in the 1950s is a stub.