Family name Sutthinai (Sutthinai 
) , in the world, is an extremely rare cognomen. Much more frequently, Sutthinai is the forename as well as the last name.
Suwalak, Chotika, Chumphu, Laosrithanakun, Ninsila, Premrachanont, Thamsoponsakul, Boonyingyongchai, Jirasuwanprapa, Netithammakul, and Uthaiwattananont