The Lounge Ax was a music venue in the Lincoln Park neighborhood of Chicago, located across the street from Wax Trax. It was an important venue for live rock music, especially indie rock. The club was opened in 1987 by Jennifer Fischer and Julia Adams, who were joined around September 1989 by Sue Miller, previously the booker at two other Chicago clubs, West End and the Cubby Bear. For most of the club's existence, it was owned by Adams and Miller. The band Phish played their first performance ever in the state of Illinois at Lounge Ax on March 30, 1990.