Around the globe, Rattanakul (Rattanakul 
) is an extremely rare male first name. More frequently, Rattanakul is the last name as well as the forename.
Ni, Sunchai, Suteema, Arunrat, Chariya, Chamnan, Chairat, Chweewan, Boonsom, Kannika, Kornuma, Ketkaew, Kunsuda, Panutda, Pagamas, Petladda, Penthicha, Peerapa, Prachak, Pornpan, Piranun, Pipaporn, Sirawit, Saharat, Urarat, Wannee, Lek, Kosa, Kija, Laor, Saard, Suwan, Ariya, Aroon, Kitja, Pinky, Phuanat, Narin, Warot, Wirat, Sompol, Sompop, Anotai, Atiwat, Kalaya, Piyada, Phrang, Wandee, Nueng, and Julalak