Cognomen Pasak (Pasak 
, ภาศักดิ์ 
, ป่าสัก) , all over the world, is a rare last name. The last name Pasak is characteristic of Czechia, where it is quite a rare surname, Israel, where it is a rare surname, and Poland. In absolute terms, it is commonest in Indonesia, Czechia, and Poland. Also, Pasak is the forename as well as the last name.