Madurai S. Somasundaram (1919–1989) was a Carnatic music vocalist. He was popularly called Madurai Somu. He learnt music from Sesha Bhagavatar, Abhirama Sastri and Chittoor Subramanyam Pillai. He started his career by giving a concert in Tiruchendur in 1934.
He was awarded the Padma Shri by the Government of India in 1976 and the Sangeet Natak Akademi Award in 1978. Annamalai University conferred the Doctor of Law on him Honoris Causa.