K. Thavamani Devi (c. 1925 – 10 February 2001) was a Sri Lankan actress who also worked in a number of Tamil films during the 1940s. Born and brought up in a wealthy family in Jaffna, Sri Lanka her father was a successful barrister. Encouraged by parents, Thavamani moved to Madras, India at an early age. She was from Sri Lankan Tamil heritage.