W
- NXS Forefront Inc.
- Waber
- WAGO
- Wakefield Thermal
- Wakefield-Vette
- Wall Industries
- Walsin Technology Corporation
- Wamco, Inc.
- Wandboard
- Watterott electronic
- Wave.N
- WAVEPIA
- WCI (World Class Illumination)
- WEC
- WECO Electrical Connectors
- WeEn Semiconductors Co., Ltd
- Weidmuller
- Well Buying
- Weller (Apex Tool Group)
Wiss (Apex Tool Group) - Welwyn / TT Electronics
- WERMA
- Western Design Center
- WetKeys® Washable Keyboards
- White Rodgers
- Whitman Controls
- Wi2Wi
- Wickmann / Littelfuse
- Wieland Electric
- Wiha
- WIKA
- Wilcoxon (Amphenol Wilcoxon Sensing Technologies)
- WIMA
- Winbond Electronics Corporation
- Winchester Electronics
- Winland Electronics
- WINSYSTEMS INC.
- Wintec Industries
- Winchester Interconnect
- W-IE-NE-R Power Electronics