Family name 蛇 (蛇 
, Sir 
) , around the world, is a common surname. The family name 蛇 is habitual in Bhutan, where it is quite a common surname, Maldives, and Taiwan, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in China, Bangladesh, and Nepal. Very seldom, 蛇 is the forename as well as the last name.