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Throughout the world, ถ้ำ (Tham , Caveewan , ถ้ำ) is quite a common epicene first name. The first name ถ้ำ is habitual in Macao, where it is quite a common feminine name, Mongolia, where it is quite a common masculine name, and Singapore, where it is quite a rare epicene name. Measured by absolute frequency, it most frequently occurs in Vietnam, Malaysia, and China. Also, ถ้ำ is the last name as well as the forename.
ถ้ำ is also a name for the fictitious and mythical characters: .