>
Family name Ramanujan (Ramanujan ) , in all the world, is a rare surname. The cognomen Ramanujan is characteristic of Singapore, where it is a rare surname, New Zealand, where it is a very rare surname, and India. Not in comparison with a country's population, it most frequently occurs in India, the United States, and Malaysia. More frequently, Ramanujan is the forename as well as the last name.