Chembai Vaidyanatha Bhagavatar a.k.a. Vaidyanatha Iyer (Malayalam:ചെമ്പൈ വൈദ്യനാഥ ഭാഗവതർ, b. 1 September 1896, d. 16 October 1974), was a Carnatic music singer from Palakkad (state of Kerala, India). Known by his village name Chembai, or simply as Bhagavatar, he was born to Anantha Bhagavatar and Parvati Ammal in 1896, at Kottayi-I/II near Palakkad on Janmashtami day. Chembai was noted for his powerful voice and majestic style of singing.