Family name Lerdsak (Lerdsak 
) , in the entire world, is an extremely rare last name. The surname Lerdsak is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Lerdsak is the forename as well as the last name.
Lanoi, Sunthornkun, Sunthonkun, Sangasilpa, Thirakhot, Rungmueanporn, Pingpitthayakul, Chongdacha, Srilakoon, Suksawadi, Wangswang, Piyarojudom, Pitakkit, Bubpamala, Suangvivattanakit, Tangjai, Jantien, Sriklor, Somchue, Somcheu, Muanjai, Lerdutsaha, Deenoo, Saelim, Thongsawatwong, and Jirayuwattanakun