Thetakudi Harihara Vinayakram (born 11 August 1942), also known as Vikku Vinayakram, is an Indian percussionist. He is also known as the God of ghatam. He plays Carnatic music with the ghatam, an earthen pot, and is credited with popularising the ghatam.
He was awarded the Padma Shri, given by Government of India in 2002, and later the 2012 Sangeet Natak Akademi Fellowship, the highest honour in the performing arts conferred by the Sangeet Natak Akademi, India's National Academy for Music, Dance and Drama. In 2014 he was awarded the Padma Bhushan.