Around the world, 妹恒 (妹恒 
) is a very rare girly forename. The given name 妹恒 is characteristic of Eastern Asia, particularly China, where it is an extremely rare girly name. Very seldom, 妹恒 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 妹恒 | China |