Family name ผ่าน (Pass 
, Past 
, Pasz 
) , throughout the world, is a common surname. The cognomen ผ่าน is habitual in Estonia, where it is quite a common surname, Austria, where it is quite a rare surname, and Latvia. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Germany. Much less frequently, ผ่าน is the forename as well as the last name.