O. S. Thiagarajan (born April 3, 1947) is a Carnatic Musician based in Chennai. He is the son and disciple of Sangeetha Booshanam O.V.Subrahmanyam. He learnt music from Sangeetha Kalanidhi T. M. Thiagarajan. Padmabhushan Lalgudi Jayaraman provided guidance/mentorship early in his career. He is ‘A- Top’ graded artist of the All India Radio and Doordarshan. He has been giving a large number of concerts well appreciated and relished. He is being featured by all leading sabhas in Chennai and India. Top artists such as Lalgudi Shri.G.Jayaraman, M.S. Gopalakrishnan, V.V. Subrahmanyam on violin accompanied him Palghat Mani Iyer, Dr T.K.Murthy, Palghat Raghu, Karaikudi Mani, Trichy Sankaran, Umayalpuram Sivaraman on mridangam, Shri.G Harishankar on Kanjira and Vikku Vinayakaram on Ghatam accompanied him. He has toured many countries for different concerts and programmes. He worked as Dean, Faculty of Fine Arts, and Annamalai University for 5 years. He has trained many disciples who are active on the concert circuit.
Speciality: Vocal