80s Buildup, or more simply as Buildup, is a 2023 Indian Tamil-language period supernatural comedy film written and directed by Kalyaan. Produced by K. E. Gnanavel Raja under the production banner Studio Green, the film stars Santhanam and Radhika Preethi in the lead roles, and R. Sundarrajan and K. S. Ravikumar in supporting roles. The film was released theatrically on 24 November 2023 and received negative reviews from critics and became a box office bomb.