Coach Steve Spagnuolo announced the hiring Monday, along with four others -- Tom McMahon as special teams coordinator, Rock Gullickson as strength and conditioning coach, Brendan Daly as defensive line coach and Matt House for defensive quality control.
Croom became the first black head coach in Southeastern Conference history when he took over the Bulldogs in 2004. Mississippi State was 21-38 in his five seasons. Before that, he spent 17 seasons as an NFL assistant.
Spagnuolo has hired 14 coaches in the past 16 days. The former New York Giants defensive coordinator was hired as the Rams' coach Jan. 17.