Cognomen อุ๋ย (Ui 
, Ugh 
, อุ๋ย) , around the world, is quite a common family name. The last name อุ๋ย is characteristic of Macao, where it is quite a rare surname, Malaysia, and Saudi Arabia. In absolute terms, it is commonest in Indonesia, Malaysia, and China. Likewise, อุ๋ย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ui | China, Indonesia, Malaysia, Taiwan, India |
| Ugh | China, Indonesia, Malaysia, Nigeria, India |
| Unyai | Malaysia |