| Y.C. Cable (East) |
| Yageo |
| Yahata Neji |
| Yakima |
| YALE |
| Yale |
| Yale Hoists |
| Yamabishi Elect |
| Yamada Dennon |
| Yamada Pump |
| Yamaha |
| Yamaichi |
| Yamaichi Electronics |
| Yamatake |
| Yamato |
| Yamato Denki Seisakusho |
| Yamato Scale GmbH |
| Yankee Engineering |
| Yansac |
| YARWAY |
| Yarway |
| Yarway / Emerson |
| YASKAWA |
| Yaskawa |
| Yaskawa Denki Seisakusho |
| Yaskawa Electric |
| YASKAWA Europe GmbH |
| Yasukawa |
| Yates |
| Ycl |
| Y-E Data |
| Yello NetCom GmbH |
| Yellow Jacket |
| Yeong Chin |
| Yeonhab |
| YIC |
| Yl Products |
| Yogami |
| Yoho Industrial |
| Yokogawa |
| Yokogawa Corporation of America |
| Yokogawa Deutschland GmbH |
| Yokokawa Germany Ingenieurbuero Bax |
| Yokokawa Germany Ingenieurbüro Bax |
| YOKOTA |
| Yokota |
| Yokowo |
| Yong Sung |
| York |
| York Applied Sys |
| YORK Industriekalte GmbH & Co.KG |
| York International |
| Yorkville Industries |
| Yoshida Electric Industry |
| Young & Assoc |
| Young Industries |
| Young Radiator |
| YS TECH USA |
| YS Tech USA |
| ystral |
| YTM-Industrial Oy |
| Yuasa |
| Yuatsu Seiko |
| Yuetsu |
| Yui Da |
| Yuken |
| Yuken Kogyo |
| Yushin America |
| Yutaka Electric Mfg |
