Surname Phiangruethai (Phiangruethai 
) , around the world, is a very rare last name. The surname Phiangruethai is characteristic of South-eastern Asia, particularly Singapore, where it is a rare surname, and Thailand, where it is a very rare surname. More prevalently, Phiangruethai is the forename as well as the last name.
Pawan, Phantha, Panthong, Seetalaratsamee, Phengkampang, Sakuntanaga, Suthamongkon, Limpreedeechai, Hongsapraphas, Wijitphairoj, and Sutthamongkon