Tanjore Ranganathan (13 March 1925 – 22 December 1987) was an Indian American Carnatic musician specializing in percussion instruments, particularly the mridangam, having studied under Palani Subramaniam Pillai.
At the California Institute of the Arts and Wesleyan University he taught many non-Indians Carnatic music, including Robert E. Brown, John Bergamo, Jon B. Higgins, Douglas Knight, David Nelson, Royal Hartigan, David Moss, Glenn "Rusty" Gillette, and Craig Woodson.
He began teaching at Wesleyan in 1963, becoming that university's first Artist in Residence in Music.
Ranganathan's younger brother was the Carnatic flute player and vocalist T. Viswanathan (1927-2002).
The two recorded the music for the Satyajit Ray documentary film Bala (1976), about their elder sister, the bharatanatyam dancer Balasaraswati.