W4 may refer to: *

Form W-4 Form W-4 (otherwise known as the "Employee's Withholding Allowance Certificate") is an Internal Revenue Service (IRS) tax form completed by an employee in the United States to indicate his or her tax situation ( exemptions, status, etc.) to the em ...

, an American tax form *

Heart Nebula The Heart Nebula (also known as the Running dog nebula, IC 1805, Sharpless 2-190) is an emission nebula, 7500 light years away from Earth and located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William ...

or Westerhout 4, an interstellar cloud in Cassiopeia * London W4, a postcode district in west London, England * W4 (nuclear warhead), a planned variant of the 1949–1953 Mark 4 nuclear bomb * W4, complete oxidation of metal, a degree of

meteorite weathering Meteorite weathering is the terrestrial alteration of a meteorite. Most meteorites date from the oldest times in the Solar System and are by far the oldest material available on our planet. Despite their age, they are vulnerable to the terrestr ...

WLLZ (FM) WLLZ (106.7 MHz, ''Detroit's Wheels'') is a commercial FM radio station licensed to Detroit, Michigan. It is owned by iHeartMedia and it broadcasts a classic rock radio format, focusing mostly on active rock titles from the 1980s and 1990s. ...

, a radio station in Detroit, USA, known as W4 from 1966 to 2000 *

WWWW-FM WWWW-FM (''W4 Country''), is a country music radio station based in Ann Arbor, Michigan, broadcasting on 102.9 MHz. Owned by Cumulus Media, WWWW-FM has a transmitter at its studios off of South Wagner Road to the northwest of downtown Ann Arbor ...

or W4 Country, a country music radio station in Ann Arbor, USA *

LC Perú LC Perú S.A.C. was a Peruvian airline based in Lima, Peru. It operated scheduled domestic flights. Its main base was Jorge Chávez International Airport.. History The company was founded in 1993, they started operations as a cargo agent. In 199 ...

, a Peruvian airline (IATA airline designator W4) * Warwick W-4 Hot Canary, a racing biplane * W4 tram, a class of electric trams built by the Melbourne & Metropolitan Tramways Board.

See also