WI or wi may refer to:
Wikipedia ( WIK-i-PEE-dee-ə or WIK-ee-PEE-dee-ə) is a free online encyclopedia with the aim to allow anyone to edit articles.
The Olympic Winter Games (official name) (French: Jeux olympiques d'hiver) is a major international sporting event held once every four years, for sports practised on snow and ice.
William Shakespeare (; 26 April 1564 (baptised) – 23 April 1616) was an English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist.
Wisconsin () 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 von Preußen, English: Frederick William Victor Albert of Prussia; 27 January 1859 – 4 June 1941) was the last German Emperor (Kaiser) and King of Prussia, ruling the German Empire and the Kingdom of Prussia from 15 June 1888 to 9 November 1918. He was the eldest grandchild of the British Queen Victoria and related to many monarchs and princes of Europe.
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, Gelderland, and Overijssel in the Dutch Republic from 1672, and King of England, Ireland, and Scotland from 1689 until his death.