Eric Church and Luke Bryan round out the first wave of performers announced by the academy on Thursday.
Reba McEntire and Blake Shelton co-host the 47th annual awards show, which will air live April 1 from the MGM Grand in Las Vegas on CBS.
Chesney leads all nominees with nine and Aldean is next with six. Both are up for the night's top honors - entertainer, album and male vocalist of the year.
Church and Bryan also will headline the ACM's free concerts at Fremont Street Experience on May 30-31.
