Surname Worarutai (Worarutai 
) , in the world, is an extremely rare cognomen. Much more prevalently, Worarutai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Worarutai | Thailand |
Duangdee, Choochantong, Chuangsuwanich, Rattanawaraha, and Ngamwatthanakul