John-Michael Liles (born November 25, 1980) is an American professional ice hockey defenseman for the Colorado Avalanche of the NHL. He is also a minority owner of the Indiana Ice of the USHL.
Born in Indianapolis, Indiana, raised in Zionsville, Indiana, Liles played most of his minor hockey in nearby Carmel before entering the Culver Military Academy in Culver, Indiana.
Liles attended Culver Military Academy and lettered in hockey and golf. In hockey, he was the varsity "B" team's MVP. He also played on the Varsity "A" team as a sophomore. Liles was then invited and selected to play in the U.S. National Team Development Program based in Ann Arbor in which he was an integral part of the blueline in both the Under 17's and Under 18's. In the 1999–00 season he was recruited to play collegiate hockey with Michigan State University of the Central Collegiate Hockey Association and as a Freshman led the defensemen in scoring with an impressive 28 points in 40 games.