Surname 乙奴四 (乙奴四 
) , in the entire world, is a very rare last name. The cognomen 乙奴四 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 乙奴四 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 乙奴四 | China |