Cognomen กรุงไกร (กรุงไกร 
, Krungkrai 
) , around the globe, is a rare last name. The family name กรุงไกร is habitual in Thailand, where it is a rare surname, China, where it is an extremely rare surname, and the United States. Likewise, กรุงไกร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กรุงไกร | Thailand |
| Krungkrai | United States, Thailand, China |