In all the world, ฤทธิคุณ (ฤทธิคุณ , Rittikhun , Ritthikhun ) is an extremely rare unknown gender first name. More prevalently, ฤทธิคุณ is the last name as well as the forename.
Rittikoon, and Rittimhun
กฤษฎิ์, สุระศักดิ์, and เกียรติพงศ์
, Rittikhun