Cognomen Udang (Udang 
) , around the world, is quite a rare last name. The cognomen Udang is habitual in South-eastern Asia, particularly Philippines, where it is a rare surname, Malaysia, and Indonesia. Not in comparison with a country's population, it is commonest in India, Philippines, and Indonesia. Likewise, Udang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udang | Philippines, India, Indonesia, Nigeria, Malaysia |