Ghanashyam Nayak (12 May 1944 – 3 October 2021) was an Indian drama, film and television actor. He had appeared in a number of tele serials, drama as well as films. His last memorable role was of Natwarlal Prabhashankar Udhaiwala a.k.a. Nattu Kaka in Taarak Mehta Ka Ooltah Chashmah.