Okhotsk(Political Subdivision)Russian from an Even word окат (okat) meaning "river"
Okinawa(Political Subdivision)Japanese Means "island in the far-away sea" in Japanese.
Okinawa(Political Subdivision, Settlement & Island)Japanese From Japanese 沖 (oki) meaning "open sea" and 縄 (nawa) meaning "rope, cord", possibly from an archaic word for a type of rope used to catch fish. This is the name of a prefecture and city in Japan, as well as the name of a group of islands (along with the main island within that group).
Oklahoma(Political Subdivision)English (American) Name of a state in the United States, from Choctaw okla "people" "tribe" "nation" + homma "red".
Okmulgee(Settlement)English (American) A city in Oklahoma. From Muskogee okimulgi meaning "boiling waters".
Okoboji(Body of Water)Sioux Legend tells the lake was named for Chief Okoboji; meaning either ‘place of rest’ or ‘reeds or rushes,’-preferred.... [more]
Olaha Shinehah(Region)Mormon The name of a plain mentioned in the Doctrine and Covenants, a work of Mormon scripture. In the 1800's, the same section in which it was mentioned was copied into a few journals, though the spellings differed... [more]
Olhudookara(Country & Island)Dhivehi From Dhivehi އޮޅުދޫ (olhudoo) referring to the island of Sri Lanka combined with ކަރަ (kara) meaning "landmass, country". This is the Dhivehi name of Sri Lanka.
Oliblish(Other)Mormon In the Book of Abraham, a figure in one of the facsimiles is said to represent Oliblish, one of the grand governing stars next to Kolob. It is listed among one of the three governing powers, called the Grand Key, along with Enish-go-on-dosh and Kae-e-vanrash, which govern all other creations, but are subject to Kolob.
Olisipo(Settlement)Ancient Roman Ancient name of Lisboa used while the city were a part of the Roman Empire. Probably derived from the name Odysseus.
Ollandia(Country & Political Subdivision)Greek Greek form of Holland 1. It is usually used to refer to the whole country of the Netherlands, even though that is technically incorrect... [more]
Omaha(Settlement)Sioux Siouan people of northeastern Nebraska, 1804, Maha, perhaps from Omaha umaha, perhaps literally "upstream (people), against the flow." The Nebraska city was founded in 1854.
Ome(Political Subdivision)Japanese A rural city in west Tokyo. It means "unripe plum", spelled with 青 (o, ao) meaning "blue, green" and 梅 (me, ume) meaning "plum, apricot".
Omeyocan(Settlement)Aztec, Aztec and Toltec Mythology It means "the place of duality." The word is composed of ōme ('two') and -yō (suffix for abstractions), which gives ōmeyōtl or duality; and -cān (place).
Onalaska(Settlement & Body of Water)English (American) Various cities in the United States and a lake in Wisconsin. After Unalaska, a volcanic island in Alaska which was mentioned in the poem "The Pleasures of Hope" by the Scottish poet Thomas Campbell.
Onamia(Settlement & Body of Water)English (American) A city and lake in Minnesota. From Ojibwe onamanii-zaaga'iganiing, which itself is derived from onaman meaning "red ochre, vermilion" and zaaga'igan meaning "lake".
Oneida(Settlement)English (American) A city in New York. From the name of the Oneida people, who are indigenous to the area.
Oneka(Body of Water)English (American) A lake in Minnesota. From Dakota onakan meaning "strike, knock off", referring to the practice of gathering wild rice by knocking it into a canoe.
Onslow(Settlement)English Meaning, "a place within the liberty of Shrewsbury, in Salop', the original and still confusingly used, name for the county of Shropshire.
Ontario(Region)English, French (Quebec), Iroquois The name Ontario comes from the Iroquoian word ontarí:io, meaning "great lake" or "beautiful water." It originally referred to Lake Ontario, which is one of the five Great Lakes in North America... [more]
Opa-locka(Settlement)English (American) A city in Florida. From Seminole opa-tisha-wocka-locka or opatishawockalocka meaning "wooded hummock, hot and dry hummock".
Opelika(Settlement)English Derived from Muscogee (Creek) opilwa lako meaning "large swamp". This is the name of a small city in the American state of Alabama.
Opelousas(Settlement)English (American) A city in Louisiana. From the Opelousa people, who were indigenous to the area.
Oppland(Political Subdivision)Norwegian From the Old Norse upp meaning "up, upper" and lǫnd meaning "lands." The inner regions of Norway were called Upplǫnd in Norse times.... [more]
Oran(Settlement)English, French From the Arabic name وهران (Wahran), which is ultimately derived from the Berber root hr meaning "lion". This is the name of a city in Algeria.
Orcadia(Island)Medieval, Old Celtic (Latinized) A medieval name for the Orkney Islands, the famous archipelago of the northwest coast of Scotland. It comes from the Roman name Orcades which was probably derived from Celtic *forko- "young pig"... [more]
Örebro(Settlement)Swedish Combination of Swedish ör, an archaic word meaning "gravel", and Bro "bridge. ... [more]
Oregon(Political Subdivision)English (American) Name of a state in the United States, from the name of a large river in the west of North America, possibly from Algonquin wauregan "beautiful".
Orinda(Settlement)English A transferred use of the given name Orinda. The city in California was likely named for the Anglo-Welsh poet Katherine Philips, who wrote under the pen name Orinda.
Orival(Settlement)French Derived from Latin aurea vallis meaning "golden vale/valley," the name belonging to three communes (one since defunct), located in the Seine-Maritime & Somme départements of northern France and Charente département of western France.
Orlando(Political Subdivision)English Name of a city in Florida, named in honor of Orlando Reeves who died in 1835 during a supposed attack by Seminoles in the Second Seminole War.
Ortac(Island)Norman A small Channel Island in England. Likely means "large rock at the edge" from the Norman 'or', meaning "edge", and 'etac', meaning "stack", referring to the geological landform.
Orthanc(Settlement)Literature A fortress in JRR Tolkien's Lord of the Rings series. Likely from the fictional Sindarin language orod, "mountain", and thanc, "cleft, split".
Ōsaka(Political Subdivision & Settlement)Japanese Alternate transcription of Osaka.
Osaka(Political Subdivision & Settlement)Japanese From Japanese 大 (ō) meaning "big, great" and 阪 (saka) meaning "slope". This is the name of a city in Japan, as well as the prefecture in which the city is located.
Osawatomie(Settlement)English (American) A city in Kansas. Its name derives from a portmanteau of Osage and Potawatomi, two Native American nations indigenous to the area.
Osgiliath(Settlement)Literature A city in JRR Tolkien's 'Lord of the Rings' series. Meaning "city of the stars", from the fictional Sindarin language ost, "fortress, city" and gil "star".
Oshawa(Settlement)English (Canadian) A city in Ontario. From Ojibwa aazhawe, meaning "a cross, the crossing place".
Oshkosh(Settlement)English (American) Transferred use of the Menominee name Oshkosh meaning "claw". Chief Oshkosh was a leader of the Menominee Native Americans, who are indigenous to the area.
Oskaloosa(Settlement)English (American) A city in Iowa. Meaning "black rain", from Mvskoke-Creek oske "rain" and lvste "black". A local legend claims that Ouscaloosa was the Creek wife of Seminole chief Osceola... [more]
Oslo(Settlement)Norwegian Meaning uncertain. Possibly a combination of Old Norse áss meaning either "ridge" or "Æsir god", and ló "meadow, clearing". Oslo is the capital city of Norway... [more]
Ossetia(Country, Political Subdivision & Region)English From Russian Осетия (Osetiya), from Georgian ოსეთი (oseti) derived from ოსი (osi) meaning "Ossetian". The name comes from As, the self-designation of the historic Alan people... [more]
Østersjøen(Body of Water)Norwegian Means "the eastern sea" in Norwegian. This is the Norwegian bokmål name for the Baltic Sea.
Östersjön(Body of Water)Swedish Means "the eastern sea" in Swedish. This is the Swedish name for the Baltic Sea.
Østfold(Political Subdivision)Norwegian From the old name of the Olsofjord fold and the Norwegian word øst. The name means, "the region east of the fold."... [more]
Ostia(Settlement)Ancient Roman, Italian From Latin ōs, meaning "mouth", transferred to mean "opening, entrance". This was a major port city in Ancient Rome, which is still the name of a coastal area of the modern city of Rome.
Otsego(Settlement)English (American) From Mohawk or Oneida otsego, meaning "place of the rock". The city in Minnesota is named for the county in New York.
Ōtsu(Settlement)Japanese Means "large port" in Japanese. The kanji that make up the name are 大 (ō), meaning "big, large", and 津 (tsu, Japanese kun reading of jīn), meaning "port"... [more]
Oulu(Settlement)Finnish From the name of the Oulu River (Finnish: Oulujoki). Oulu is probably taken directly from the Finnish dialectal word oulu meaning "flood water". Oulu is the capital city of Northern Ostrobothnia.
Ouzhou(Region)Chinese From Chinese 欧 (ōu) referring to Europe (from an abbreviation of the archaic name 欧罗巴 (Ōuluóbā) derived from Greek Εὐρώπη) and 洲 (zhōu) meaning "continent"... [more]
Oviedo(Settlement)Spanish, Asturian One of the best-known theories suggests that the term Oviedo comes from the union of urbs and vetus, which in Latin means "old city." Other theories relate it to "ovem" (sheep), and possibly meaning "place full of sheep"
Owámniyomni(Other)Sioux A waterfall near Minneapolis, Minnesota, the only natural major waterfall on the Mississippi River before the construction of a series of locks. From Dakota owámniyomni, "whirlpool".
Owatonna(Settlement)English (American) From the Dakota name for the nearby Straight River, Wakpá Owóthaŋna.
Oymyakon(Political Subdivision & River)Russian Named after the Oymyakon River, whose name reportedly comes from the Even word kheium meaning "unfrozen patch of water; place where fish spend the winter" ... or the Even word heyum (hэjум) (kheium being a possible misspelling) means "frozen lake".
Padang(Settlement)Indonesian, Minangkabau Means "field, plain" in Indonesian. This is the name of the capital city of the Indonesian province of West Sumatra.
Pafuri(Political Subdivision & Settlement)Tsonga The name "Pafuri" originates from the Tsonga language and refers to a region in the northernmost part of South Africa near the Limpopo River.
Pahang(Political Subdivision & River)Malay, English Uncertain meaning, possibly from mahang, the Malay name for a type of tree native to the area (genus Macaranga), or from Khmer ប៉ាហាំង (paahang) meaning "tin". This is the name of a Malaysian state as well as a river that flows through the region.
Pakokku(Settlement)English From Burmese ပခုက္ကူ (pahkukku), meaning uncertain. This is the name of a city in Myanmar.
Pakse(Settlement)Lao, Thai Means "mouth of the river" from Lao ປາກ (pak) meaning "mouth" and ເຊ (se) meaning "river". This is the name of a city in Laos.
Palabuhanratu(Settlement)Indonesian, Sundanese Means "queen's harbour" from Sundanese palabuhan meaning "harbour" and ratu meaning "queen". This is the name of a city in Indonesia.
Palana(Settlement & Body of Water)Russian "having a Waterfall"
Palau(Country)English Palau is an archipelago in Oceania. The flag is a yellow circle in the middle of a blue background, and the country is locally known as Belau.