Tanjavur R. Ramamoorthy (தஞ்சாவூர் ர.ராமமூர்த்தி) (15 June 1929 - 22 June 2019) was a vidwan in Indian classical music, playing Carnatic music on the mridangam, an ancient Indian percussion instrument. The mridangam is the primary rhythmic accompaniment in a Carnatic music ensemble, and in the Dhrupad genre, where it is known as a pakhawaj.