Last name Уяна (Ujana 
, Uyana 
, Uiana ) , worldwide, is a rare family name. The cognomen Уяна is habitual in Sri Lanka, where it is a rare surname, Ecuador, and Malaysia, where it is a very rare surname. Measured by absolute frequency, it is commonest in India, Sri Lanka, and Nigeria. Likewise, Уяна is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ujana | Brazil, United States, Nigeria, India |
| Uyana | China, India, Sri Lanka, Nigeria, Indonesia |
| Uiana | Brazil, United States, India |
| Уяна | Russia |