P. Kesava Pillai, better known by his pen-name P. Kesavadev, was a novelist and social reformer of Kerala, India. He is remembered for his speeches, autobiographies, novels, dramas, short stories, and films. Odayil Ninnu, Nadhi, Bhrandalayam, Ayalkar, Ethirppu (autobiography) and Oru Sundariyude Athmakadha are some among his 128 literary works. Kesavadev along with Thakazhi Sivasankara Pillai and Vaikom Muhammad Basheer are considered the exponents of progressive Malayalam Literature.

Odayil Ninnu is a 1965 Indian Malayalam-language drama film directed by K. S. Sethumadhavan and written by P. Kesavadev based on his novel of the same name. The film deals with the life and struggles of a proud and hardworking rickshaw puller, Pappu. It stars Sathyan, Prem Nazir, K. R. Vijaya and Kaviyoor Ponnamma. Master Dasarath plays the young Pappu. Suresh Gopi made his acting debut with the film, who was then six years old. He appeared as the feudal lord's timid son, who also becomes the root cause for Pappu running away from home.