| OLUGU HOSTELERIA | ASTURIAS |
| OLYMPO MAS OTROS | ASTURIAS |
| OMAÑA TAMARGO | ASTURIAS |
| OMD HUMAN RESOURCES NORTE | ASTURIAS |
| OMEGA GSM DISTRIBUCIONES | ASTURIAS |
| OMEGA IUS | ASTURIAS |
| OMEGA URBAN ASTURIAS SERVICE | ASTURIAS |
| OMIO IEMANJA | ASTURIAS |
| OMNES VOLUMUS PLUS | ASTURIAS |
|
|
| OMNIA AUTEM | ASTURIAS |
| OMNIA RECOM | ASTURIAS |
| OMNIBUS LED TECHNOLOGY | ASTURIAS |
| OMSANITARIAS | ASTURIAS |
| OMYCRON RED | ASTURIAS |
| ON BUSINESS LINGUISTIC SERVICES | ASTURIAS |
| ON NAILS ASTURIAS | ASTURIAS |
| ON THE ROAD CYCLING TOURS | ASTURIAS |
|
|
| OÑATE 1921 | ASTURIAS |
| ONCARS AUTOMOVILES | ASTURIAS |
| ONDA GIJON PRODUCCIONES | ASTURIAS |
