Last name Sunghoon (Sunghoon 
) , throughout the world, is a rare cognomen. The cognomen Sunghoon is characteristic of South Korea, where it is a rare surname, Malaysia, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in South Korea, China, and Malaysia. Also, Sunghoon is the forename as well as the last name.