WO

Wo may refer to:

• Wo (kana), a Japanese kana
• Wolof language ISO 639-1 code
• Wa (Japan), an elder Chinese name for Japan
• Wo, the name of China Unicom's 3g network
• Wo Ding, traditionally believed to be a king of the Shang Dynasty
• Wo Jia, a king of the Shang Dynasty
• Wo Weihan (1949-2008), a Chinese scientist and entrepreneur executed for allegedly spying for Taiwan
• Wo Fat, a fictional nemesis of Steve McGarrett on the television show Hawaii 5-0
• Zhang Wo, a Chinese painter of the Yuan Dynasty

WO may be an acronym for:

• Walk over, a term in sports and elections
• Warrant Officer
• WebObjects, a web application platform
• Wine of Origin, a designated area for the production of South African wine
• World Airways IATA code
• Wrestling Observer, a professional wrestling newsletter by Dave Meltzer
• Warhammer Online, a MMORPG
• Write-off, a term often used to describe that a vehicle is damaged beyond economic repair