All over the world, Oini (Oini 
) is a very rare gender-neutral first name. The forename Oini is characteristic of India, where it is an extremely rare female name, and China, where it is an extremely rare masculine name. Much less frequently, Oini is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oini | China, Malaysia, Papua New Guinea, India, Japan |