Surname Kangyong (康勇 
, 康永 , Kangyong 
) , around the world, is a rare cognomen. The surname Kangyong is characteristic of South Korea, where it is a rare surname, China, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in China, South Korea, and India. More frequently, Kangyong is the forename as well as the last name.