Thangamani Rengamani is a 1989 Indian Tamil-language comedy film directed by Rama Narayanan.
The story revolves around two close friends, Thangamani and Rangamani, who become entangled in love stories with the daughters of wealthy men. Rangamani lies to Meena's father about his identity to win her hand in marriage, while Thangamani mistakenly believes Lakshmi is Sivagangai Gopalakrishnan's daughter.
The film features Murali and S. Ve. Shekher in its lead roles, with supporting performances by S. S. Chandran, Kovai Sarala, Pallavi, and Devisri.
Thangamani Rengamani is an unofficial remake of the 1984 Malayalam film Poochakkoru Mookkuthi, released on April 14, 1989.