Jaywant Dalvi (1925 (or 1924) - 1994) was a prominent contemporary Marathi writer in Maharashtra, India. Originally hailing from Sawantwadi in Maharashtra he was born in a Goud Saraswat Brahmin family.
He worked as an assistant editor at Marathi newspapers Prabhāt and Lokmānya, and later with USIS. As part of USIS efforts to make good English literature available in other languages, Dalvi selected texts and able translators, and helped the cause. He took an early retirement to concentrate on writing novels.
He is best remembered for his dramas, and a humorous column on Marathi literary personalities which he wrote under the pseudonym : ThanthanpaaL. Jaywant Dalvi had a long time friendly relations with noted Marathi literary couple Pu La Deshpande and Sunita Deshpande.