The television show, which changes gears and tells a new story each season, will feature Chiklis as the father of a character played by Evan Peters and the ex-husband of the character played by Kathy Bates.
Also returning for the fourth season of the show is Jessica Lange, Sarah Paulson, Angela Basset and Frances Conroy.
The season is set in 1950 Jupiter, Fla., and will star Lange as the manager of one of the last-remaining freak shows in the United States.
"My heart was pounding like it is right now. It is a Freak Show, oh man!" Chiklis said after the announcement, which was made at PaleyFest on Friday.