WI or wi may refer to:
Wikipedia ( (listen) wik-ih-PEE-dee-ə or (listen) wik-ee-PEE-dee-ə) is a multilingual online encyclopedia, based on open collaboration through a wiki-based content editing system.
Wikidata is a collaboratively edited knowledge base hosted by the Wikimedia Foundation. It is a common source of open data that Wikimedia projects such as Wikipedia can use, and anyone else, under a public domain license.
William Shakespeare (bapt. 26 April 1564 – 23 April 1616) was an English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's greatest dramatist.
Sir Winston Leonard Spencer-Churchill (30 November 1874 – 24 January 1965) was a British politician, army officer, and writer.
Wisconsin ( (listen)) is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions.
Wilhelm II or William II (German: Friedrich Wilhelm Viktor Albert; 27 January 1859 – 4 June 1941) was the last German Emperor (Kaiser) and King of Prussia.
William III (Dutch: Willem; 4 November 1650 – 8 March 1702), also widely known as William of Orange, was sovereign Prince of Orange from birth, Stadtholder of Holland, Zeeland, Utrecht, Guelders and Overijssel in the Dutch Republic from the 1670s and King of England, Ireland and Scotland from 1689 until his death.
Winona Laura Horowitz (born October 29, 1971), known professionally as Winona Ryder, is an American actress.