Worldwide, Kaiva (Kaiva 
) is a very rare unisex first name. The forename Kaiva is habitual in Latvia, where it is a rare female name, and India, where it is an extremely rare gender-neutral name. Also, Kaiva is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kaiva | Estonia, Latvia, Papua New Guinea, India, Lithuania |