Cognomen Sudon (Sudon 
, สุดล ) , all around the world, is a rare last name. The cognomen Sudon is characteristic of Thailand, where it is a rare surname, Portugal, where it is a very rare surname, and France. Not in comparison with a country's population, the name is most common in Thailand, India, and the United States. More frequently, Sudon is the forename as well as the last name.