S. Ramanathan (1917-1988) was a Carnatic music singer and musicologist.He learned music from Tiger Varadachariar, Sabesa Iyer, Ponniah Pillai, and Sathur Krishna Iyengar. He received a Ph.D. in ethnomusicology from Wesleyan University, Middletown, Connecticut, where he also taught.He had disciples who have carved names for themselves such as P.UnniKrishnan, S.