Surname 牛奶 (牛奶 
) , all around the world, is a very rare last name. The cognomen 牛奶 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. Much more prevalently, 牛奶 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 牛奶 | China |