- Win's Electrical Supply
- Winar Connection
- Winkle Electric Co Inc
- Winlectric
- Winlectric
- Winlectric
- Winlectric
- Winlectric
- Winlectric Fort Collins
- Winlectric Inc
- Winlectric Inc
- Winn Lange Electric Hughes Inc
- Winn Lange Electric Hughes Inc
- Winsar Corp Wire Electric
- Wire Works Inc
- Wired 4 Power
- Wise Supply Co Inc
- Wiseway Supply
- Woehner USA
- Wofford Electric & Pump Supply
- Wolberg Electl Suppl Co Inc
- Wolberg Electrical Supply Co
- Wolberg Electrical Supply Co
- Wolff Brothers Supply Inc
- Womack Co
- Womack Electric
- Womack Electric & Supply
- Womack Electric Co
- Womack Electric Supply
- Womack Electric Supply
- Womack Electric Supply
- Womack Electric Supply
- Womack Electric Supply Co
- Womack Electric Supply Co
- Womack Electric Supply Co
- Womack Electric Supply Co
- Womack Electric Supply Co
- Womack Electric Supply Co Inc
- Wood Medical
- Woodward Brothers Inc
- Wooley Electric Supply Co
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Electric Supply
- World Wide Connectors
- Worldwide Electric Corp
- Wyandotte Electric Supply Co
- Yakima Industrial Electrical
- Yankee Electric Supply Co
- Yankee Electric Supply Inc
- Yankee Electric Supply Inc
- Yankee Electrical Supply
- Yaun Co Inc
- Yes Electrical Supplies Inc
- Yes Electrical Supply Inc
- Yesco Electrical Supply Inc
- Yesco Electrical Supply Inc
- Yokogawa Corp Of America
- Yonkers E & S
- Young Fastener Products
- Yusen Associates Inc
- Z D Products
- Zeiler Electric Supply Co
- Zeller Corp
- Zeus Engineering
- Zeus Engineering
- Zimco Electric Supply Co
- Zucco Co
