The 31st Chicago Film Critics Association Awards were announced on December 8, 2018. The awards honor the best in film for 2018. The nominations were announced on December 7. Roma received the most nominations (9), followed by The Favourite (7) and A Star Is Born (7).

Hereditary is a 2018 American psychological supernatural horror film written and directed by Ari Aster in his feature directorial debut. Starring Toni Collette, Alex Wolff, Milly Shapiro, Ann Dowd, and Gabriel Byrne, the film follows a grieving family tormented by a demonic entity after the death of their secretive grandmother.