WHitachi
WAgility Trains
WBradken
WClarion (company)
WEuclid Trucks
WFabrik Inc.
WGE Hitachi Nuclear Energy
WHitachi HD64180
WHGST
WHitachi 6309
WHitachi Construction Machinery (Europe)
WHitachi Data Systems
WHitachi Hatsukaze
WHitachi Jimpu
WHitachi Magic Wand
WHitachi Monorail
WHitachi Rivale
WHitachi-LG Data Storage
WHorizon Nuclear Power
WJapan Display
WKashiwa Reysol
WMARS (ticket reservation system)
WMaxell
WMetabo
WMicrodrive
WHiroaki Nakanishi
WNamihei Odaira
WSun Rockers Shibuya
WTata Hitachi Construction Machinery
WTravelstar
WTsūtenkaku