Family name Kaia-Kristiina (Kaia-Kristiina 
) , in the entire world, is an extremely rare last name. Predominantly, Kaia-Kristiina is the forename as well as the last name. Parts of the name also exists independently as a first name Kaia, and a first name Kristiina.
| VARIANT | COUNTRY |
|---|---|
| Kaia-Kristiina | United Kingdom |