Cognomen 沃什 (Wash 
, 沃什 
) , across the world, is quite a common surname. The cognomen 沃什 is characteristic of Trinidad and Tobago, where it is quite a rare surname, Bahrain, where it is a rare surname, and the United States. Measured by absolute frequency, this name is the most popular in the United States, Nigeria, and Indonesia. Much less frequently, 沃什 is the forename as well as the last name.