Family name ライア (Laia 
, ライア 
) , around the globe, is a common cognomen. The last name ライア is habitual in Spain, where it is quite a common surname, Indonesia, where it is quite a rare surname, and Brazil. Likewise, ライア is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Laia | Brazil, Portugal, Spain, Syria, Indonesia |
| ライア | Japan |