WI

WI may refer to:

• Wisconsin United States postal abbreviation
• Wiesbaden, a city in southwest Germany
• Watch Instantly, a video streaming service offered by Netflix
• Waterfall Ice, the ice formed from a frozen waterfall
• West Indies postal abbreviation
  • West Indies cricket team, a term used in cricket statistics
• Women's Institutes, a locally organised group for British women

Wi may refer to:

• Wi (kana), an obsolete Japanese character
• Wi (mythology), a Lakota deity
• Wi, Inc., an American medical device development corporation
• Wiman, European surname
• Wi Man of Gojoseon, ruler of Wiman Joseon
• Wi, common of surname Wei (魏, 韋, 衛, 尉)