WW

• County Wicklow, Ireland (vehicle plate code WW; region code WW, IE-WW)
• Westerwaldkreis, Germany (vehicle plate code WW)
• Route WW (Missouri), USA; a secondary road

• William H. Webster (born 1924), director of the FBI and CIA, referred to in the Kryptos sculpture as "WW"
• Woodrow Wilson, President of the United States from 1913-1921

• William Whopper, an evil property developer in the Australian 1980 children's TV programme Secret Valley
• Wonder Woman, a fictional superhero

• Adelaide Writers' Week, a literary festival held annually in Adelaide, South Australia

• WW, the production code for the 1968–1969 Doctor Who serial The Krotons
• WW (album), a 2005 album by the Norwegian metal group Gehenna

• Wiener Werkstätte, an association of architects, artists, designers and artisans in Vienna, Austria
• Winter & Winter Records (W&W), German record label
• W&W, Dutch music duo
• WW Entertainment, Dutch film distributor

• Venezolana (IATA airline code WW)
• Bmibaby (2002-2012; IATA airline code WW)
• WOW Air (2012-2019; IATA airline code WW)
• Winchester and Western Railroad (reporting mark WW)
• Wüstenrot & Württembergische (W&W), German financial services company
• WW International, an American dietetics and nutrition company, formerly called Weight Watchers

• "Wrong word", in proofreading
• ʬ , an IPA character
• ww (digraph), a digraph in Latin script

• "Warm white", a descriptor of light source color temperature, as defined in the JIS Z 9112 standard, and used by Exif tags
• Indian locomotive class WW
• NZR WW class of locomotive
• Weight Watchers (diet), a comprehensive diet program by WW International
• World war
• wall-to-wall (abbrev: w-w)
• w/w, abbreviation for mass fraction in chemistry
• WW (formation), a soccer play

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• Woodrow Wilson Teaching Fellowship, aka WW Teaching Fellowship
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• WWS
• WWW (disambiguation)
• W2 (disambiguation)
• 2W (disambiguation)
• W (disambiguation)

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