WO or Wo may refer to:
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier.
World War I (WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history.
Wonder Woman is a 2017 American superhero film based on the DC Comics character of the same name, distributed by Warner Bros.
Heywood "Woody" Allen (born Allan Stewart Konigsberg; December 1, 1935) is an American filmmaker, writer, actor, comedian, playwright, and musician whose career spans more than six decades.
The fictional world in which the A Song of Ice and Fire novels by George R. R. Martin take place is divided into several continents.
In demographics, the world population is the total number of humans currently living. The world population was estimated to have reached 7.5 billion in April, 2017. The United Nations estimates it will further increase to 11.2 billion in the year 2100.