Family name 开朗 (开朗 
, Kailang 
) , in all the world, is a rare last name. The family name 开朗 is characteristic of China, where it is a very rare surname, Spain, and Philippines, where it is an extremely rare surname. In absolute terms, it most frequently occurs in China, Spain, and India. More frequently, 开朗 is the forename as well as the last name.