![](https://web.archive.org/web/20151004095638im_/https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/WWI-re.png/450px-WWI-re.png)
Map of the World showing the participants in World War I. Those fighting on the side of the Triple Entente (at one point or another) are depicted in green, the Central Powers in orange, and neutral countries in grey.
This is a list of countries that participated in World War I, sorted by alphabetical order.
Contents
The Entente Powers[edit]
Note: The "Entente Powers" are also known as the Allies of World War I or the Allies
Andorra
Armenia
Arab Rebels
Belgium
Brazil
Republic of China
Costa Rica
Cuba
Czechoslovak Legions
Emirate of Nejd and Hasa
France (French colonial empire)
Greece
Guatemala
Haiti
Honduras
Italy
Japan
Liberia
Montenegro
Nepal
New Hebrides (British-French condominium)
Nicaragua
Panama
Portugal (Portuguese colonial empire)
Romania
Russia
Serbia
San Marino
Siam (now Thailand)
United Kingdom (British Empire[1])
Canada
India (now India, Bangladesh, Burma and Pakistan)
Newfoundland
Australia
New Zealand
Malta
South Africa
Rhodesia (now Zimbabwe and Zambia), administered by the British South Africa Company
British crown colonies
United States
- Non Independent ethnic groups: Armenians, Assyrians, Poles, Pontic Greeks
The Central Powers[edit]
Austria-Hungary
Azerbaijan Democratic Republic
Bulgaria
Dervish State
Germany
Jabal Shammar
Ottoman Empire
Sultanate of Darfur
Ukrainian State
- Non Independent ethnic groups: Boer, Poles
Neutral countries[edit]
Afghanistan – received a German diplomatic mission trying to convince it to act against the British in India
Principality of Albania – In political chaos since the beginning of the war, the country was occupied by both Central and Allied powers but never declared war on either side
Argentina
Bolivia
Bhutan
Chile
Colombia
Denmark
El Salvador
Ethiopia – received a German diplomatic mission trying to convince it to act against Italy, United Kingdom and France in East Africa
Liechtenstein – Had a customs and monetary union with Austria-Hungary
Luxembourg – Never declared war on the Central Powers despite being invaded and occupied by Germany
Bogd Khaanate of Mongolia
/
Mexico – Declined an alliance with Germany (see Zimmermann Telegram)
Monaco
Netherlands – An ally of the United Kingdom by treaty. Traded with both sides.
Norway – Gave naval assistance to the United Kingdom.
Paraguay
Persia – Civil dispute and Allied Campaign against Ottomans
Spain
- Spitsbergen – Danish-Norwegian co-dominium
Sweden – Non-belligerent
Switzerland – Switzerland did declare a "state of siege"
Venezuela – Supplied the Allies with oil
Declarations of war[edit]
The following table shows the timeline of the several declarations of war among the belligerent powers. Entries on a yellow background show severed diplomatic relations only, not actual declarations of war.
See also[edit]
Notes and references[edit]
- ^ The British Empire was the common term for the United Kingdom and its overseas possessions at this time. The term refers to the colonies it controlled, to the Indian Empire, which, while not officially designated a colony, was functionally indistinguishable from one, and the British Dominions - former colonies which were self-governing in most respects but whose foreign policy was controlled by London; Australia, Canada, Newfoundland, New Zealand and South Africa. At that time, the United Kingdom of Great Britain and Ireland also included the entire island of Ireland.