Family name Lerdapirak (Lerdapirak 
) , across the world, is an extremely rare cognomen. The cognomen Lerdapirak is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, Lerdapirak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lerdapirak | Thailand, China |