Family name Gilwa (Gilwa 
) , globally, is a rare last name. The surname Gilwa is habitual in Philippines, where it is a rare surname, Singapore, where it is a very rare surname, and South Africa. Not in comparison with a country's population, it is the most numerous in Philippines, India, and South Africa. Much less frequently, Gilwa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gilwa | South Africa, Philippines, Singapore, Nigeria, India |