Surname น้ำฟ้า (Namfa 
, Namfah , Namfha 
) , all around the world, is a very rare family name. The last name น้ำฟ้า is characteristic of Thailand, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United Kingdom. In absolute terms, this name is the most popular in Thailand, Nigeria, and India. More prevalently, น้ำฟ้า is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Namfa | United Kingdom, India, Thailand, Nigeria |
| Namfah | Thailand |
| Namfha | Myanmar, Thailand |