Trestman is the 14th head coach in franchise history.
Trestman has spent the last five years as the coach of the Montreal Alouettes in the Canadian Football League, leading the team to back-to-back Grey Cups in 2009 and 2010.
He was named the CFL coach of the year in 2009 and had a 64-34 overall record with the Alouettes.
Prior to joining the CFL, Trestman was an NFL assistant coach with the Vikings, Buccaneers, Browns, Vikings, 49ers, Lions, Cardinals, Raiders and Dolphins. He is known for molding successful quarterbacks.
Trestman will replace Lovie Smith, who was fired by Chicago after missing the playoffs for the second straight year despite a 10-6 record.
