Cognomen Arellano-Datuin (Arellano-Datuin 
) , all over the world, is an extremely rare family name. The family name Arellano-Datuin is characteristic of South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Parts of the name also exists independently as a last name Arellano, and a last name Datuin.
| VARIANT | COUNTRY |
|---|---|
| Arellano-Datuin | Philippines |