Products
- Wilshire Oil Company of Texas
- Wilson Line, Incorporated
- Wire Goods Company
- Wisconsin Telephone Company
- Wisconsin Telephone Company
- Woodruff Sleeping & Parlor Coach Company (Signed by Jonah Woodruff)
- Worcester Consolidated Street Railway Company
- York Railways Company
- Yosemite Short Line Railway Company
- Yuba Construction Company
- Yuba Manufacturing Company