Cognomen Lertnapa (Lertnapa 
) , globally, is an extremely rare last name. The family name Lertnapa is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Lertnapa is the forename as well as the last name.
Maowong, Pittapundu, Wongnibunkij, Patchaboot, Wutthitanakornkul, and Srithongsuk