A. Sethumadhavan, popularly known as Sethu, is a Malayalam fiction writer. He has published more than 35 books. He won the Kendra Sahitya Akademi Award in 2007 for the work Adayalangal. He received the Kerala Sahitya Akademi Awards in 1982 and 1978 for his works Pandavapuram and Pediswapnangal; and Vayalar Award for Adyalangal in 2006. He also won Odakkuzhal award for his novel Marupiravi. Sethu's other literary works include Velutha Koodarangal, Thaliyola, Kiratham, Niyogam, Sethuvinte Kathakal and Kaimudrakal. He also served as the chairman and CEO of the South Indian Bank. In 2022, he won the Ezhuthachan Puraskaram, highest literary honour of the Kerala Sahitya Akademi.

The Vayalar Award is given for the best literary work in Malayalam. The award was instituted in 1977 by the Vayalar Ramavarma Memorial Trust in memory of the poet and lyricist Vayalar Ramavarma (1928-1975). A sum of ₹25,000, a silver plate and certificate constituted the award originally. Now it is raised to a sum of ₹1,00,000. It is presented each year on 27 October, the death anniversary of Vayalar Ramavarma.