Surname Lertitthikun (Lertitthikun 
, เลิศอิทธิกุล ) , globally, is a very rare cognomen. The family name Lertitthikun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เลิศอิทธิกุล, Lertitthikun | Thailand |