W series or W-series may refer to:
Transportation Dodge W series, 4x4 versions of Dodge D series GMC W series or Chevrolet W series, versions of the Isuzu Elf trucks Kawasaki W series, motorcycles
Technology Sony Vaio W series, netbook computers Sony Walkman W Series, wearable MP3 players; see List of Sony Walkman products Sony Ericsson W series, Sony Ericsson Walkman phones ThinkPad W series, Lenovo laptop computers W series (satellites), geosynchronous communication satellites
Other uses W Series (championship), single-seater racing championship
See also
W (disambiguation), for series named "W"