What is "ww"

WW may refer to:

• Bmibaby (IATA airline code)
• WOW air (IATA airline code)
• Winchester and Western Railroad reporting mark
• William H. Webster, a director of the FBI and CIA, referred to in the Kryptos sculpture as "WW"
• William Whopper, an evil property developer in the Australian 1980 children's TV programme Secret Valley
• an abbreviation for whitewater in the International Scale of River Difficulty
• "Wrong word" in proofreading
• the car number plate code for Wicklow, Ireland
• the car number plate code for Westerwaldkreis, Germany
• Wonder Woman
• the symbol for the "warm white" light source color temperature, as defined in the JIS Z 9112 standard in and used by Exif tags
• WW (album), a 2005 album by the Norwegian metal group Gehenna

WW is the sixth full-length album by the Norwegian black metal band Gehenna. It was recorded and released 4 years after their previous album.