Thiruchi Loganathan (24 July 1924 – 17 November 1989) [1] was an Indian playback singer of the Tamil film industry.

[attribution needed] He sang memorable duets mostly with P. Leela and Jikki.

He also sang with many others including, M. L. Vasanthakumari, M. S. Rajeswari, L. R. Eswari, P. A. Periyanayaki, T. V. Rathnam, A. G. Rathnamala, A. P. Komala, N. L. Ganasaraswathi, Radha Jayalakshmi, K. Jamuna Rani, K. Rani, Lakshmi Shankar, P. Susheela, S. Janaki, A. V. Saraswathi, T. S. Bagavathi, Vadivambal, Swarnalatha, K. Swarna and U. R. Chandra.

He also sang duets with male singers, most notably with Seerkazhi Govindarajan and Mariyappa.

Other singers that he sang with include S. C. Krishnan, T. M. Soundararajan, G. Ramanathan, A. L. Raghavan, C. R. Subburaman, P. B. Sreenivas, K. R. Chellamuthu, Maadhavan, Shanmugasundharam, V. T. Rajagopalan, G. K. Venkatesh and T. L. Maharajan.