Chithha (transl. Father's younger brother) is a 2023 Indian Tamil-language crime drama film written and directed by S. U. Arun Kumar and produced by Siddharth, who stars in the lead role alongside Nimisha Sajayan (in her Tamil debut), and Anjali Nair in addition to Baby Sahasra Shree and Baby S. Aafiyah Tasneem in the prominent roles. The film revolves around the relationship between a paternal uncle and his niece which goes through several circumstances after the latter goes missing.

Kumar developed the story idea after he came across articles revolving around child sexual abuse and met with survivors of child abuse, government officials and NGOs to provide their feedback based on his ideas before finalising the script. The film was shot in and around Palani for 69 days. The cinematography was handled by Balaji Subramanyam and edited by Suresh A. Prasad. Dhibu Ninan Thomas and Santhosh Narayanan composed the soundtrack, while Vishal Chandrashekhar composed the film score.

Chithha was released theatrically on 29 September 2023 to critical acclaim with praise for the performances, storytelling, direction and themes, and became a commercial success at the box office. At the 69th Filmfare Awards South, the film won seven awards including Best Film – Tamil.