Cognomen Ngachan (Ngachan 
) , all over the world, is a rare surname. The cognomen Ngachan is characteristic of Myanmar, where it is a rare surname, and India, where it is an extremely rare surname. Very seldom, Ngachan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ngachan | Myanmar, India |
| s.v. ngachan botanist (b. 1979) |
|