Surname Ngiap (Ngiap 
) , around the globe, is a rare last name. The family name Ngiap is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Singapore, where it is a rare surname, and Indonesia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Malaysia, Indonesia, and China. Much less frequently, Ngiap is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ngiap | Indonesia, China, Singapore, Malaysia, United States |