2W

2W or 2-W may refer to,

• 2nd meridian west, a longitude coordinate
• OR 2W; see U.S. Route 30 in Oregon
• SD40-2W, a model of EMD SD40-2 locomotive
• GP38-2W, a model of EMD GP38-2 locomotive
• GP40-2W, a model of EMD GP40-2 locomotive
• AF-2W, a model of Grumman AF Guardian
• SLC-2W, a designation for Vandenberg AFB Space Launch Complex 2
• Welcome Air's IATA code
• BBC 2W, a former digital television channel in Wales
• A two-wire telecommunications circuit
• Tropical Depression 02W; see Typhoon Isa (1997)