Cognomen 老爺 (老爺 
, Lão Gia 
) , across the world, is an extremely rare family name. The surname 老爺 is habitual in South-eastern Asia, particularly Vietnam, where it is an extremely rare surname. More frequently, 老爺 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 老爺 | China |
| Lão Gia | Vietnam |