Cognomen 兰蔓 (兰蔓 
) , worldwide, is a very rare last name. The family name 兰蔓 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 兰蔓 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 兰蔓 | China |