Knicks president Phil Jackson made the announcement on Monday. Fisher played 10 seasons for the Lakers while Rambis was a coach in Los Angeles.
Jackson says, ''The three of us are similar in our philosophies and our approach to the game.''
Rambis was part of eight NBA title teams with the Lakers, either as a player, assistant coach or adviser/assistant general manager.
He was head coach with the Lakers and Minnesota Timberwolves over three seasons.
Rambis finished his third stint as an assistant coach with the Lakers last season.