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 two-wire telecommunications circuit
 * Tropical Depression 02W; see Typhoon Isa (1997)