Leelawathy Ramanathan (née R. L. Harrison in 1870) was the Australia-born wife of Ponnambalam Ramanathan.
She studied Hindu scriptures, and converted to Hinduism upon marrying Ponnambalam Ramanathan in 1906[1]. She wrote many Hindu books, including a version of the Ramayana in English. She also published many of Ponnambalam's lectures on Hinduism[2].