Sadagopan (better known as Chitralaya Gopu) is an Indian screenwriter and director who works in the Tamil cinema. He has written nearly 60 films, and directed 27 of them. He scripted dramatic films such as Moondru Dheivangal and Shanti Nilayam and comedies such as Kadhalikka Neramillai, Galatta Kalyanam, Patti Sollai Thattathe and Uttharavindri Ulle Vaa.