- W3C (World Wide Web Consortium)
- Waivers
- Walsh Code
- WAP (Wireless Application Protocol)
- Wavelength
- WCA (Wireless Communications Association)
- WCDMA (Wideband Code Division Multiple Access)
- WCS (Wireless Communications Service)
- WDM (Wavelength Division Multiplexing)
- Whip Antenna
- Wide Area Telecommunications/Telephone Service (WATS)
- Wideband
- WIN (Wireless Intelligent Network)
- Windows CE
- Wireless
- Wireless Cable/Multipoint Distribution Service
- Wireless Communication
- Wireless Internet
- Wireless LANs (WLAN)
- Wireless Local Loop System (WLL)
- Wireless Message Format
- Wireless PBX (Private Branch Exchange)
- WMA (Windows Media Audio)
- WML (Wireless Markup Language)
- WOS (Wireless Office Systems)
- WPABX (Wireless Private Automatic Branch Exchange)
- WPDA (Wireless Partnership for Donor Awareness)
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