Cognomen Tongtap (Tongtap 
) , throughout the world, is a very rare surname. The last name Tongtap is characteristic of Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Very seldom, Tongtap is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tongtap | Nigeria, Thailand |