| YA CONDUZCO | VALLADOLID |
| YACO Y ASOCIADOS VALLADOLID | VALLADOLID |
| YAGO TELECOM | VALLADOLID |
| YALOVES PRODUCCIONES | VALLADOLID |
| YAMU 2004 | VALLADOLID |
| YANTAR 2006 CONSTRUCCIONES Y SERVICIOS | VALLADOLID |
| YANTARIA | VALLADOLID |
| YANVAL | VALLADOLID |
| YANYU | VALLADOLID |
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| YARHIBOL | VALLADOLID |
| YAST CONSULTING & SPECIALIZED SERVICES | VALLADOLID |
| YE WU YUDI TUDELA | VALLADOLID |
| YE ZHU 2000 | VALLADOLID |
| YECONSA GRUPO INMOBILIARIO | VALLADOLID |
| YECONVALL | VALLADOLID |
| YEGUADA JARDIN DE CASTILLA | VALLADOLID |
| YEMOLID | VALLADOLID |
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| YEROS 2011 | VALLADOLID |
| YESDEKE | VALLADOLID |
| YESOS AIPESA | VALLADOLID |
