| Xinhuanet |
| XKW(Beijing)CO., LTD |
| XXXX |
| Y.O.U. Underwear |
| Yabous Cultural Centre |
| Yakit Rakit Ltd (The) |
| Yaoh Ltd |
| Yaraqa |
| Yarrah Organic Petfood BV |
| Yayasan Bagong Kussudiardja |
| Yayasan PERINTIS (Pendidikan Rangkai Informasi and Teknologi Swadaya) |
| Yayasan Sime Darby |
| Yeo Valley Production Limited |
| YHA (England and Wales) - charity owner |
| Yildiz Holding A.S |
| Yingli Energy Development Co., Ltd. (previously Yingli Green Energy Holding Company Limited) |
| Yingli Power Holding Company Ltd. |
| Yogamatters Limited |
| Yogi Tea GmbH |
| Yonderland |
| Yonsei University |
| Yora Pet Foods for the Planet Ltd |
| York Archaeological Trust For Excavation And Research Limited |
| Yorkshire Bank Plc |
| Yorkshire Building Society |