Associate head coach Fran Ganter was appointed associate athletic director for football administration and Mike McQuery, a quarterback for the Nittany Lions in the 1990s, was named running backs coach.
Hall most recently served as running backs coach for the Dallas Cowboys in 2002. He also spent five seasons as coach of the Rhein Fire in NFL Europe.
"Galen has a brilliant football mind, is a very fine teacher and will be great for our offense," Penn State Coach Joe Paterno said.
Hall was offensive coordinator on Oklahoma's national championship teams in 1974-75. In five-plus seasons at Florida, he posted a 40-18-1 record, earning coach of the year honors in 1984.