Naphat is the son of Pimpaka Siangsomboon, Thai actress and the second runner-up of Miss Thailand World 1988.
He graduated from Bromsgrove International School and Communication Design at Mahidol University International College, also known as MUIC.
In 2022, Pimchanok Luevisadpaibul and Siangsomboon officially announced their relationship, and their breakup in July 2024.
