Countries without a long form name

My country, Canada, is officially just called “Canada.” That is the complete official name of the country; there is no other. It used to be semi-official convention to sometimes say “Dominion of Canada,” but that’s not actually an official name and I don’t think anyone even says that anymore.

Most countries aren’t like that. France is officially the Republic of France, Israel is officially the State of Israel, Australia is the Commonwealth of Australia, and Norway is the Kingdom of Norway.

I always sort of assumed Canada was an odd duck here but was recently delighted to hear Hungary changed their name to just Hungary. Well, actually, “Magyar” is probably more accurate; they call it that, I don’t know what we say Hungary.

Are there any other countries with no long form names?

I think your commonwealth cousin New Zealand may fall in that same category, best as I can tell.

Romania

c. 1300, from Medieval Latin Hungaria (also source of French Hongrie), probably literally meaning “land of the Huns,” who ruled a vast territory from there under Attila in 5c. The people’s name for themselves we transliterate as Magyar. Middle English uses the same words for both Attila’s people and the Magyars, who appeared in Europe in 9c. and established a kingdom in 1000.
hungary | Origin and meaning of the name hungary by Online Etymology Dictionary

Montenegro

Orbán was behind that particular constitutional amendment. Some of his detractors claim that this is the first, none too subtle step in turning Hungary into something other than a republic.

Ukraine

Georgia

Eastern Europe is riddled with them.

Canada is officially known only as “Canada” but “Dominion of Canada” has seen some official use as well. Canada’s founding document, the British North America Act, 1867 (now renamed the Constitution Act, 1867) says that the provinces (colonies) of Canada (i.e. Ontario and Quebec), New Brunswick and Nova Scotia would merge into one Dominion under the name of Canada. I.E. the name of the new entity is stated as simply “Canada”, but it is also stated that that entity is a “Dominion”, I.E. a realm, kingdom or monarchy. The rest of the document uses simply “Canada” and never “Dominion of Canada”. However, other later British North America acts, which do have the power of constitutional law, do use the term “Dominion of Canada” (without however stating that this is the country’s name). However, the Constitution Act, 1982 only uses “Canada” as well. (The Canadian government stopped using “Dominion of Canada” in official documents shortly after World War II). We could probably say that Canada’s long-form name can be just “Canada”, but that “Dominion of Canada” is a disused alternate official descriptor.

Ireland has something similar. According to the constitution, the name of the country is “Eire” (i.e. in Gaelic) or “Ireland” in English. As you can see “Republic of” is not part of the official name. However, “Republic of Ireland” is an official description of the country.

Antigua and Barbuda doesn’t have a long-form name.

You can find a bunch of them skimming through Wikipedia lists: List of sovereign states and dependent territories in Europe - Wikipedia

The “name” box has “common and official name”, so you easily spot some of the already posted, along with Bosnia and Herzegovina, Ireland and others.

Similar list for Asia List of sovereign states and dependent territories in Asia - Wikipedia

Afghanistan, Japan, Malaysia, and so on.