How many countries took part in World War 2?
There were 104 countries either involved in or affected by World
Virtually every country was involved in one form or another.
Even the neutral counties were harmed by their neighbors being
at war and unable to trade as in the past.
If you want a list of combatants Allies and Axis powers their
are good reference pages on Wikipedia. (see Related Links)
Albania, Andorra, Argentina, Armenia, Australia, Austria,
Azerbaijan, Bahrain, Belarus, Belgium, Bolivia, Brazil, Bulgaria,
Canada, Ceylon (Sri Lanka), Chile, China, Colombia,Costa Rica,
Croatia, Cuba, Czechoslovakia, Denmark, Dominican Republic,
Ecuador, Egypt, El Salvador, Estonia, Ethiopia, Fiji, Finland,
France, Georgia, Germany, Gibraltar, Greece, Guatemala, Haiti,
Honduras, Hong Kong, Hungary, Iceland, British India (now India,
Pakistan & Bangladesh), Indonesia, Iran, Iraq, Ireland, Italy,
Japan, Korea, Laos, Latvia, Lebanon, Liberia, Liechtenstein,
Lithuania, Luxembourg, Malaya, Malta, Manchukuo, Mexico, Monaco,
Mongolia, Morocco, Nauru, Nepal, Netherlands, Newfoundland, New
Zealand, Nicaragua, Northern Rhodesia, Norway, Oman, Palestine,
Panama, Paraguay, Peru, Philippines, Poland, Portugal, Romania,
Samoa, American Samoa, San Marino, Saudi Arabia, Singapore, South
Africa, Southern Rhodesia, Soviet Union / Union of Soviet Socialist
Republics, Spain, Sweden, Switzerland, Syria, Thailand, Tonga,
Transjordan, Turkey, United Kingdom, United States of America,
Uruguay, Vatican City, Venezuela, Yemen, Yugoslavia
It's called a world war because most countries were involved to
some degree even though they may not have been fighting.