Last name Phasa (Pass 
, Phasa 
, ภาษา 
) , in the entire world, is a common surname. The last name Phasa is habitual in Estonia, where it is quite a common surname, Latvia, where it is quite a rare surname, and Austria. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Indonesia. Very seldom, Phasa is the forename as well as the last name.