| Title | Owner | Description |
|---|---|---|
| Winchester | Winchester Repeating Arms | Lever-action rifle |
| Windbreaker | John Rissman company | Outdoor jacket |
| Windex | SC Johnson | Window Cleaner |
| Winnebago | Winnebago Industries | Recreational vehicle |
| Wite-out | BIC Corporation | Typographical correction fluid |
| X-Acto | Elmer's Products, Inc | Utility knife |
| xe lam | Lambretta | tuk-tuk |
| Yo-Yo | Dunkan Toys | Toy made of a disk and a cord |
| Zamboni | Zamboni Company | Ice resurfacer |
| Zeppelin | Luftschiffbau Zeppelin | Rigid airship |
| Zimmer frame | Zimmer Holdings | Walking frame |
| Ziploc | S. C. Johnson | Storage bag |
| Zipper | B.F. Goodrich | Zip fastener |
| Zodiac | Zodiac Nautic | Small flexible boat |
| Унитаз | ?? | Flush toilet |
| Фломастер | ?? | Felt-tip pen |
