Sanjayan, the penname of Professor Mannikoth Ramunni Nair or M.R. Nair (1903 – 1943), was a Malayalam satirist famous for his humorous anecdotes.
Sanjayan was born in Thalassery, a town in Kannur District of Kerala.
Sanjayan's contribution to the Malayalam literature were mainly satirical essays criticizing the contemporary social state. He was closely related with a journal called "Kerala Patrika".
He was the editor-in-chief of Viswaroopam, a satirical magazine in the Malayalam language.