The team said on its website it signed Rivers after the Boston Celtics released him from his contract in exchange for a first-round pick in the 2015 NBA Draft.
Rivers compiled a record of 416-305 record In nine season with the Celtics, including an NBA-best 66-16 in the 2007-08 season, when Boston won the NBA Championship. His teams won six Atlantic Division titles and the 2009-10 Eastern Conference Championship, and went 59-47 in post-season play.
Rivers -- who played for the Clippers in 1991-92 -- replaces Vinny Del Negro, who was released following the 20012-13 season when the team was eliminated in the first round of the playoffs, after reaching the Western Conference semifinals in the 2011-12 season.
In four years as head coach in Orlando -- where he was named NBA Coach of the Year in his first season -- Rivers led the Magic to three consecutive playoff appearances.