Kasinathuni Viswanath (born 19 February 1930) is an Indian film, sound designer turned director and actor known for his works in Telugu Cinema. He is a recipient of the National and Nandi Awards. Viswanath's Bollywood films include Sargam, Kaamchor, Sanjog, Jaag Utha Insan, Eeshwar, Sur Sangam, Shubh Kaamna, Sangeet and Dhanwaan.