N. P. Chellappan Nair (1903 - 1972) was a playwright and short story writer from Kerala, India. He concentrated on social comedy of manners. Of his 200 stories, thirty-one have been published in a separate volume. He received the Kerala Sahitya Akademi Award for Drama in 1961 for the play Iblisukalude Naattil.
N. P. lived in Mavelikkara.
N. P. Chellappan Nair wrote the screenplay and starred in K. Subrahmaniam's film Prahlada (1941). He also scripted the films, Chandrika (1950), Sasidharan (1950), Chechi (1951) and Athmasanthi (1964).