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In the entire world, Tuấn (Tuấn
, Туан
, トゥアン
) is a common male first name. The first name Tuấn is habitual in Vietnam, where it is quite a common masculine name, Macao, where it is quite a rare boy's name, and Czechia, where it is a rare boy's name. Measured by absolute frequency, it is commonest in Vietnam, Macao, and Saudi Arabia. Likewise, Tuấn is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tuấn | Saudi Arabia, South Korea, Macao, Taiwan, Vietnam |
| Туан | Belarus, Kazakhstan, Russia, Ukraine |
| トゥアン | Japan |