In all the world, Mammai (Mammai 
) is a rare epicene first name. The first name Mammai is habitual in India, where it is a very rare epicene name, and Nigeria, where it is an extremely rare epicene name. More frequently, Mammai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mammai | Nigeria, Germany, United States, South Africa, India |