Globally, 蔓延 (蔓延 
) is a very rare unisex first name. The given name 蔓延 is characteristic of Eastern Asia, particularly China, where it is an extremely rare gender-neutral name. Very seldom, 蔓延 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 蔓延 | China |