Kolamaavu Kokila (transl. Kolam-powder Kokila) (abbrev. COCO) is a 2018 Indian Tamil-language black comedy crime film written and directed by Nelson Dilipkumar in his directorial debut, and produced by Lyca Productions. The film stars Nayanthara alongside a supporting cast including Yogi Babu, Saranya Ponvannan, VJ Jacqueline, R. S. Shivaji, Charles Vinoth, Hareesh Peradi and others. Anirudh Ravichander composed the film's music.

The film received positive reviews from critics who praised the performances of the cast (particularly Nayanthara), use of black comedy, technical aspects, screenplay and direction. The film was released on 17 August 2018 and earned over ₹20 crore (US$2.5 million). It was remade in Hindi as Good Luck Jerry (2022).