Thiruchi Loganathan (24 July 1924 – 17 November 1989) was a playback singer of the Tamil film industry. He is known for his work in movies such as Manthiri Kumari (1950) and Parasakthi (1952). He was married to Rajalakshmi, daughter of actress C. T. Rajakantham. His sons are, T. L. Maharajan, Deepan Chakravarthy, and , who are also popular playback singers.