Surname กิตติวงศ์ (กิตติวงศ์ 
, Kittiwong , Kittivong 
) , all over the world, is a rare family name. The family name กิตติวงศ์ is habitual in Laos, where it is a rare surname, Thailand, and the United States, where it is an extremely rare surname. Also, กิตติวงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kittiwong, กิตติวงศ์, Kittawong | Thailand |
| Kittivong | Laos, United States, Thailand |
Kaittiwong, Khitthiwong, Khittiwong, Kiitiwong, Kitiywong, Kittipawong, Kittiwongse, and Kittiyawong