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Family name Caha (Caha , คชา , 卡夏 ) , all over the world, is quite a rare cognomen. The surname Caha is characteristic of Czechia, where it is quite a rare surname, Slovakia, where it is a rare surname, and Croatia. Measured by absolute frequency, this name is the most popular in Czechia, India, and Philippines. Also, Caha is the forename as well as the last name.