Ajax-Farrell was an influential American comic book publisher formed from the merger of Ajax Comics and Farrell Publications. Operating during the mid-20th century, it produced various genres including horror, romance, Western, crime, and superhero comics. Notable for its horror titles like "Haunted Thrills" and romance comics such as "Sweethearts," Ajax-Farrell left a lasting impact despite ceasing publication in the late 1950s due to declining sales and the Comics Code Authority.