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Surname Katnapa (Katnapa ) , across the world, is an extremely rare cognomen. Much more prevalently, Katnapa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katnapa | Thailand |
Sanmonkon, Kaewdee, Sanmongkon, Tepwongsa, Puttanakul, and Mukdasakulpiban