Cognomen Langkakad (Langkakad 
) , across the world, is a very rare family name. The surname Langkakad is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Langkakad | Thailand |
Tanad, Phanuwut, Pornpimon, and Watcharaporn