Đồng Nai Province
Đồng Nai Province is a province or municipality of Vietnam, with its capital at Biên Hòa.
41 states starting with the letter O — each with origin, classification, and notes.
If you've been searching for states that start with O, you'll find 41 detailed states below. We're not interested in giving you only a list of names — every entry on this page links to a full profile with the kind of detail you'd actually want to know.
For states, that means country, capital, region within country, population, area, and official languages.
Đồng Nai Province is a province or municipality of Vietnam, with its capital at Biên Hòa.
Đồng Tháp Province is a province or municipality of Vietnam, with its capital at Cao Lãnh.
Łódź Voivodeship is a voivodeship of Poland, with its capital at Łódź.
Oaxaca is a state of Mexico, with its capital at Oaxaca.
Obwalden is a canton of Switzerland, with its capital at Sarnen.
Occidental Mindoro is a province of Philippines, with its capital at Mamburao.
Occitanie is a region of France, with its capital at Toulouse.
Odesa Oblast is an oblast or city of Ukraine, with its capital at Odesa.
Odisha is a state of India, with its capital at Bhubaneswar.
Offaly is a county of Ireland, with its capital at Tullamore.
Ogun is a state of Nigeria, with its capital at Abeokuta.
Ohio is a state of United States, with its capital at Columbus.
Ōita is a prefecture of Japan, with its capital at Ōita.
Okayama is a prefecture of Japan, with its capital at Okayama.
Okinawa is a prefecture of Japan, with its capital at Naha.
Oklahoma is a state of United States, with its capital at Oklahoma City.
Olomouc Region is a region of Czech Republic, with its capital at Olomouc.
Olt County is a county of Romania, with its capital at Slatina.
Omsk Oblast is a federal subject of Russia, with its capital at Omsk.
Ondo is a state of Nigeria, with its capital at Akure.
Ontario is a province or territory of Canada, with its capital at Toronto.
Opole Voivodeship is a voivodeship of Poland, with its capital at Opole.
Oran Province is a province of Algeria, with its capital at Oran.
Ordu is a province of Turkey, with its capital at Ordu.
Örebro County is a county of Sweden, with its capital at Örebro.
Oregon is a state of United States, with its capital at Salem.
Orenburg Oblast is a federal subject of Russia, with its capital at Orenburg.
Oriental (Morocco) is a region of Morocco, with its capital at Oujda.
Oriental Mindoro is a province of Philippines, with its capital at Calapan.
Oromia Region is an region of Ethiopia, with its capital at Addis Ababa.
Oryol Oblast is a federal subject of Russia, with its capital at Oryol.
Osaka Prefecture is a prefecture of Japan, with its capital at Osaka.
Oslo (County) is a county of Norway, with its capital at Oslo.
Osmaniye is a province of Turkey, with its capital at Osmaniye.
Östergötland County is a county of Sweden, with its capital at Linköping.
Ostrobothnia (Region) is a region of Finland, with its capital at Vaasa.
Osun is a state of Nigeria, with its capital at Oshogbo.
Ouargla Province is a province of Algeria, with its capital at Ouargla.
Oum El Bouaghi Province is a province of Algeria, with its capital at Oum El Bouaghi.
Overijssel is a province of Netherlands, with its capital at Zwolle.
Oyo is a state of Nigeria, with its capital at Ibadan.
That's our current list of states starting with the letter O. We add new entries every week — if you have a favorite state starting with O that isn't on this page, let us know and we'll write it up.
Looking for more? Try states that end with O, or contain O anywhere in the name.