Kumbakonam M. Rajappa Iyer was a Mridangam Vidwan in the field of Carnatic music from India.

[2] After the demise of Pillai, Rajappa Iyer pursued a Mridangam education with Sakkottai Rangu Iyengar.

[3] Rajappa Iyer accompanied on Mridangam and Ghatam for stalwarts like Ariyakudi, Sivan, T. K. Rangachari, M. D. Ramanathan, Dr. Balamurali Krishna, Chittibabu, Lalgudi G Jayaraman, Ramani and many others apart from giving many lec-dems on mridangam and ghatam playing techniques.

[1] Rajappa Iyer formulated unique style of teaching in which the lessons were systematically arranged with focus on fingering techniques.

His disciples include well known professional artistes on the mridangam and ghatam: K R Ganesh (Son), Srimushnam Raja Rao,Papanasam R Kumar, S R Jayaraman, V Sundaraghavan, K Ramakrishnan, Balashankar, Vilangudi V.Sivakumar, Venkataraman (Pune), Umayalpuram Mali, Umayalpuram V. Kalyanaraman, Palani Kumar, B. Ganapathiraman, Vijay Siva, Manoj Siva, Shriram Brahmanandham, V Kalyanaraman, Chrompet J Ganesh, Vijayaganesh, V Srinivasan, Madipakkam Murali, Adambakkam Shankar, Kalakkadu Srinivasan and Chromepet Suresh, Suryanarayanan, D Ramanathan, Komal R Srinivas.