Riki Morgan Ellison (born August 15, 1960, in Christchurch, New Zealand) is a former linebacker, who went by Riki Gray while in college at USC as an All Pac 10 player in 1982.

Ellison was part of a USC Trojans team that went to the Rose Bowl and won a national championship.

The NFL San Francisco 49ers chose him with their fifth-round pick in the 1983 NFL Draft. Jerry Attaway, his conditioning coach at USC and (teammate) Ronnie Lott had convinced Bill Walsh to take him.