This is the list of 63 world expositions, which were acknowledged as world expositions.
| 1851 | London | England |
| 1853 | Dublin | Ireland |
| 1853/54 | New York | USA |
| 1855 | Paris | France |
| 1862 | London | England |
| 1865 | Dublin | Ireland |
| 1867 | Paris | France |
| 1871 | London | England |
| 1872 | London | England |
| 1873 | Vienna | Austria |
| 1873 | London | England |
| 1874 | London | England |
| 1876 | Philadelphia | USA |
| 1878 | Paris | France |
| 1879/80 | Sidney | Australia |
| 1880/81 | Melbourne | Australia |
| 1883 | Amsterdam | Netherlands |
| 1884/85 | New Orleans | USA |
| 1885 | Antwerp | Belgium |
| 1888 | Brussels | Belgium |
| 1888 | Glasgow | Scotland |
| 1888/89 | Melbourne | Australia |
| 1888 | Barcelona | Spain |
| 1889 | Paris | France |
| 1893 | Chicago | USA |
| 1894 | Antwerp | Belgium |
| 1894 | San Francisco | USA |
| 1897 | Brussels | Belgium |
| 1900 | Paris | France |
| 1901 | Glasgow | Scotland |
| 1904 | St. Louis | USA |
| 1905 | Liege | Belgium |
| 1906 | Milano | Italy |
| 1910 | Brussels | Belgium |
| 1911 | Turin | Italy |
| 1913 | Ghent | Belgium |
| 1915 | San Francisco | USA |
| 1926 | Philadelphia | USA |
| 1929 | Barcelona | Spain |
| 1930 | Antwerp | Belgium |
| 1933/34 | Chicago | USA |
| 1935 | Brussels | Belgium |
| 1937 | Paris | France |
| 1939/40 | New York | USA |
| 1939/40 | San Francisco | USA |
| 1958 | Brussels | Belgium |
| 1962 | Seattle | USA |
| 1964/65 | New York | USA |
| 1967 | Montreal | Canada |
| 1968 | San Antonio | USA |
| 1970 | Osaka | Japan |
| 1974 | Spokane | USA |
| 1975 | Okinawa | Japan |
| 1982 | Knoxville | USA |
| 1984 | New Orleans | USA |
| 1985 | Tsukuba | Japan |
| 1986 | Vancouver | Canada |
| 1988 | Brisbane | Australia |
| 1992 | Sevilla | Spain |
| 1998 | Lisboa | Portugal |
| 2000 | Hanover | Germany |
| 2005 | Seto | Japan |
| 2010 | Shanghai | China |
Since 1928 exists an institution, which decides, whether an event can be called a "world exposition". Similar as the olympic games (but not with such a regular cycle) countries and towns applies for organizing such an event.
Here it is the Paris resident Bureau des Expositions, which convokes a committee of representatives of the member states for this decisions.
The former free decision of states and towns to call an exposition a world exposition can be noticed for example in the years 1888 and 1889, when world expositions were held in 5 different states and towns.
