Cognomen 开 (开 
, Khai 
, Kāi ) , around the globe, is a widespread last name. The family name 开 is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a common surname, Myanmar, and Brunei (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in China, Malaysia, and Myanmar. Much less frequently, 开 is the forename as well as the last name.