WW

• bmibaby, IATA airline code
• Waterworks (disambiguation)
• Woodrow Wilson, a former President of the United States.
• Weight Watchers, a company offering various dieting products and services to assist weight loss
• Werewolf, in folklore and mythology is a person who shapeshifts into a wolf
• William H. Webster, a director of the FBI and CIA, is referred to in the Kryptos sculpture as "WW"
• Winchester and Western Railroad, AAR reporting mark WW
• World war, a military conflict affecting the majority of the world's major nations
• NASA World Wind, a virtual globe developed by NASA
• Weather watch, see Severe weather terminology (United States)
• Wikipedia Watch, a website maintained by Daniel Brandt
• Watson Wyatt Worldwide, whose NYSE identifier is WW
• Wendy Williams (disambiguation page)

In entertainment:

• Wonder Woman, a fictional DC comic character.
• Washington Wizards, an NBA basketball team
• The West Wing (TV series), American television serial drama set in the West Wing of a fictionalized White House
• WarioWare, Inc., video game series
• Wario World, a video game for the Nintendo GameCube
• Prince of Persia: Warrior Within, a video game for the Nintendo GameCube, Sony Playstation 2 and Xbox
• Animal Crossing: Wild World, a video game for the Nintendo DS
• The Legend of Zelda: The Wind Waker, a video game for the Nintendo GameCube
• Woody Woodpecker
• World Wrestling Entertainment, entertainment company dealing primarily in the professional wrestling industry, logo appears as "WW"
• Word World, a children's television show on PBS
• The Wubbulous World of Dr. Seuss

In editing shorthand:

• Wrong word, meaning a word or phrase being used was not the one implied by its context, per the knowledge of the editor.