Cognomen Khwa (ขวัญ 
, Khwa 
, ขวา ) , across the world, is a rare family name. The surname Khwa is habitual in South-eastern Asia, particularly Myanmar, where it is a rare surname, Singapore, and Malaysia, where it is a very rare surname. In absolute terms, this name is the most popular in Myanmar, China, and Thailand. More prevalently, Khwa is the forename as well as the last name.