Search by letter: O
Search by letter
Search by letter: O
- Oliver Hart (economist)
- Oliver Heaviside: Self-taught pioneer in electromagnetism and applied mathematics Oliver Heaviside
- Oliver Hill: Virginia Civil-Rights Lawyer and Legal Strategist Oliver Hill
- Oliver Hudson
- Oliver Kahn
- Oliver Knussen — Scottish composer and conductor Oliver Knussen
- Oliver Letwin
- Oliver "Tuku" Mtukudzi Oliver Mtukudzi
- Oliver Neuville
- Oliver North: U.S. Marine, Iran–Contra Figure, Author and Broadcaster Oliver North
- Oliver Postgate: creator of Bagpuss, The Clangers and co‑founder of Smallfilms Oliver Postgate
- Oliver Rackham (1939–2015) — British landscape and woodland historian Oliver Rackham
- Oliver Reed (1938–1999) Oliver Reed
- Oliver Sacks (1933–2015): neurologist, clinician, and popular science writer Oliver Sacks
- Oliver Smithies — geneticist, inventor of gel electrophoresis, Nobel laureate Oliver Smithies
- Oliver Spasovski: Macedonian politician and former prime minister Oliver Spasovski
- Oliver Stone
- Oliver Twist: Dickens's social novel about childhood, crime and redemption Oliver Twist
- Oliver Wallace: Composer and Conductor for Early Disney Animation Oliver Wallace
- Oliver Wendell Holmes, Sr.
- Oliver Wolcott (1726–1797) — Signer and Connecticut leader Oliver Wolcott
- Oliver Wolcott Jr.: U.S. Treasury Secretary and Governor of Connecticut Oliver Wolcott Jr.
- Oliver! (musical) — stage musical by Lionel Bart Oliver!
- Olivet (Mayenne) Olivet, Mayenne
- Olivia Cole (1942–2018) Olivia Cole
- Olivia Colman — English actress known for comedy and award-winning drama Olivia Colman
- Olivia Cooke (English actress) Olivia Cooke
- Olivia de Havilland
- Olivia Hack
- Olivia J. Hooker — psychologist, educator, and Tulsa survivor Olivia Hooker
- Olivia Hussey
- Olivia Munn — American actress, television personality and model Olivia Munn
- Olivia Newton-John: singer, actress and cultural figure (1948–2022) Olivia Newton-John
- Olivia Olson — actress, voice artist and singer-songwriter Olivia Olson
- Olivia Thirlby: American actress best known for Juno and Dredd Olivia Thirlby
- Olivia Wilde: actor, director, and public advocate Olivia Wilde
- Olivia Williams (British actress) Olivia Williams
- Olivier Assayas: French filmmaker, screenwriter and critic Olivier Assayas
- Olivier Chansou — French aerospace engineer and head of ENAC Olivier Chansou
- Olivier Kapo — French footballer and versatile attacking midfielder Olivier Kapo
- Olivier Messiaen: French composer, organist, teacher and innovator Olivier Messiaen
- Olivier Strebelle (1927–2017): Belgian sculptor of monumental public forms Olivier Strebelle
- Olivine
- Olivone (former municipality in Ticino, Switzerland) Olivone
- Olla, Louisiana
- Ollanta Humala: Peruvian politician and former president Ollanta Humala
- Ollastra: small comune in the Province of Oristano, Sardinia Ollastra
- Olle Ljungström: Swedish singer-songwriter and guitarist Olle Ljungström
- Ollezy — commune in Aisne, northern France Ollezy
- Olli Mäki: Finnish boxer, European lightweight champion and cultural figure Olli Mäki
- Ollie Johnston — Disney animator, coauthor of The Illusion of Life Ollie Johnston
- Ollie, Iowa: small city profile Ollie, Iowa
- Ollmuth — municipality in Trier‑Saarburg, Rhineland‑Palatinate Ollmuth
- Ollolai — hilltop town in Nuoro, Sardinia, Italy Ollolai
- Ollon, Switzerland: Alpine municipality in the canton of Vaud Ollon, Switzerland
- Olly Murs — English pop singer and television presenter Olly Murs
- Olm (Proteus anguinus): the European cave salamander Olm
- Olmec civilization of ancient Mesoamerica Olmec
- Olmedilla Photovoltaic Park
- Olmedo — comune in the Province of Sassari, Sardinia Olmedo
- Olmsted County, Minnesota — Overview and History Olmsted County, Minnesota
- Olmsted Falls, Ohio — suburban city in the Cleveland area Olmsted Falls, Ohio
- Olne — Municipality in Liège Province, Belgium Olne
- Olney, Illinois
- Olof Mellberg
- Ólöf Nordal — Icelandic politician and former Minister of the Interior Ólöf Nordal
- Olof Palme — Swedish Prime Minister and Social Democratic Leader Olof Palme
- Olof Thunberg — Swedish actor, director and voice artist Olof Thunberg
- Olofström
- Olofström Municipality
- Olomouc: Historical City in Moravia, Czech Republic Olomouc
- Olomouc Region — geography, history, economy and attractions Olomouc Region
- Olonne-sur-Mer
- Oloron-Sainte-Marie
- Olorotitan — a crested hadrosaur from the Late Cretaceous Olorotitan
- Olpe (district)
- Olpe, Germany — Town in North Rhine-Westphalia Olpe, Germany
- Olsberg
- Olsberg, Aargau: municipality in the Rheinfelden district Olsberg, Aargau
- Olst-Wijhe: municipality in Overijssel, Netherlands Olst-Wijhe
- Olsztyn — regional capital in northeastern Poland Olsztyn
- Olt River Olt (river)
- Olt County (Romania) Olt County
- Olten — Swiss town and regional hub in the canton of Solothurn Olten
- Olten District (Canton of Solothurn, Switzerland) Olten District
- Oltenia — historical region of southwestern Romania Oltenia
- Oltingen — municipality in Basel-Landschaft, Switzerland Oltingen
- Oltingue, Haut-Rhin (France) Oltingue
- Olusegun Obasanjo: Nigerian leader, soldier, and statesman Olusegun Obasanjo
- Olympe de Gouges: playwright, activist, and early advocate for women's rights Olympe de Gouges
- Olympia — ancient Greek sanctuary and site of the Olympic Games Olympia
- Olympia (1938 film) Olympia (1938 movie)
- Olympia (Manet)
- Olympia Centre — Chicago skyscraper Olympia Centre
- Olympia Dukakis
- Olympia Fields, Illinois: suburban village shaped by a historic country club Olympia Fields, Illinois
- Olympia Snowe: Maine's Moderate Republican Senator and Legislator Olympia Snowe
- Olympia, Washington
- Olympiacos F.C.: Overview, History, Identity and Achievements Olympiacos F.C.
- Olympiastadion Berlin — history, architecture and major events Olympiastadion Berlin
- Olympic Azzaweya SC
- Olympic Flame and Torch Relay Olympic Flame
- Olympic Games: history, structure, and global significance Olympic Games
- Olympic mascots: design, role, history, and cultural significance Olympic mascot
- Olympic Mountains (Washington State) Olympic Mountains
- Olympic National Park
- Olympic Peninsula
- Olympic rings — design, meaning, history and uses Olympic rings
- Olympic Stadium
- Athens Olympic Stadium (Spiros Louis) — Athens, Greece Olympic Stadium (Athens)
- Olympic weightlifting
- Olympique Alès — French association football club Olympique Alès
- Olympique de Marseille
- Olympique Lyonnais: history, teams, stadium and achievements Olympique Lyonnais
- Olympique Lyonnais Féminin
- Olympos (novel) Olympos (book)
- Mount Olympus: geography, mythology, ecology, and human use Olympus
- Olympus Has Fallen (2013 film) Olympus Has Fallen
- Olympus Mons
- Olyphant, Pennsylvania
- Olzai (Sardinia) Olzai
- Om (disambiguation)
- Om Puri: Life, Career, Notable Roles and Legacy Om Puri
- Om Shanti Om — 2007 Bollywood film by Farah Khan Om Shanti Om
- Omagh — County Town of County Tyrone, Northern Ireland Omagh
- Omagh bombing
- Omaha Ak-Sar-Ben Knights (AHL team, 2005–2007) Omaha Ak-Sar-Ben Knights
- Omaha Hold'em (Omaha Poker) Omaha hold'em
- Omaha, Arkansas: small town profile Omaha, Arkansas
- Omaha, Nebraska — overview, history, and notable features Omaha, Nebraska
- Omaheke Region (Namibia): geography, people, economy and administration Omaheke Region
- Omak, Washington: City at the Gateway to the Okanogan Highlands Omak, Washington
- Oman: overview, geography, history, and culture of the Sultanate Oman
- Oman at the Olympics: history, participation and key facts Oman at the Olympics
- Oman national football team
- Omar Abdel‑Rahman, the 'Blind Sheikh' Omar Abdel-Rahman
- Omar A. Aggad — Saudi-born Palestinian businessman and founder of AICO and APIC Omar Aggad
- Omar Bongo Ondimba — President of Gabon, 1967–2009 Omar Bongo
- Omar Bravo — Mexican football forward and club icon Omar Bravo
- Omar Gooding
- Omar Graffigna — Argentine Air Force officer and member of the military junta Omar Graffigna
- Omar Hassan Ahmad al‑Bashir — Sudanese ruler (1989–2019) Omar Hassan Ahmad al-Bashir
- Omar Hawsawi
- Omar Kabbaj: Moroccan Economist and International Finance Leader Omar Kabbaj
- Omar Karami — Lebanese Prime Minister and Politician (1934–2015) Omar Karami
- Omar Khayyam: Persian mathematician, astronomer and poet (1048–1131) Omar Khayyam
- Omar Mateen — perpetrator of the 2016 Orlando nightclub attack Omar Mateen
- Omar Quintana — Ecuadorian politician and sports executive Omar Quintana
- Omar Sharif: Egyptian actor and international film star Omar Sharif
- Enrique Omar Sívori Omar Sívori
- Omar Suleiman: Egyptian intelligence chief and short‑term vice‑president Omar Suleiman
- Omar Sy: French actor and comedian Omar Sy
- Omar Torrijos (1929–1981): Panamanian military leader and negotiator of the Canal treaties Omar Torrijos
- Omarosa Manigault Newman — television personality and political aide Omarosa Manigault Newman
- Ombella-M'Poko (prefecture of the Central African Republic) Ombella-M'Poko
- Omega (Greek letter Ω, ω) Omega
- Omega (Cyrillic)
- Omega Centauri (ω Centauri, NGC 5139) — largest globular cluster of the Milky Way Omega Centauri
- Omega Nebula (M17) — the Swan Nebula, a bright H II region Omega Nebula
- Omega SA — Swiss watchmaker known for precision and iconic collections Omega SA
- Omelette (omelet): an egg-based cooked dish Omelette
- Omen: signs, interpretation, history and cultural roles Omen
- Ömer Döngeloğlu — Turkish theologian, writer and television presenter Ömer Döngeloğlu
- Ömer İzgi — Turkish politician and former Speaker of the Grand National Assembly Ömer İzgi
- Omero Antonutti: Italian actor known for Padre Padrone and El Sur Omero Antonutti
- Omet (Gironde) — Rural commune in southwestern France Omet
- OMF International (Overseas Missionary Fellowship) OMF International
- OMG — Usher single from Raymond v. Raymond (2010) OMG (Usher song)
- Omi (Ōmi): Ancient Japanese Hereditary Title and Political Rank Omi
- Ōmi Code (Asuka Kiyomihara Code) Ōmi Code
- Ōmi Province (Ōmi no kuni) Ōmi Province
- Omicron: Greek letter Ο ο — form, history, and uses Omicron
- Omid Djalili
- Ōmihachiman, Shiga Prefecture — historic merchant city on Honshū Ōmihachiman
- Ōmisoka: Japan's New Year's Eve traditions and customs Ōmisoka
- Omissy — commune in the Aisne department of northern France Omissy
- Ōmiya Ardija Omiya Ardija
- Ommaya reservoir: intraventricular access device for cerebrospinal therapies Ommaya reservoir
- Ommen
- Omniverse
- Omnivore — animals with mixed diets Omnivore
- Omote-sando Station
- Omri Sharon (Israeli politician) Omri Sharon
- Omsk: Siberian administrative, cultural, and transport center Omsk
- Omul — the Baikal whitefish (endemic omul of Lake Baikal) Omul
- Omusati Region (Namibia) Omusati Region
- On a Day Like Today (Bryan Adams album) On a Day Like Today
- On Avery Island (debut album by Neutral Milk Hotel) On Avery Island
- On Denoting — Bertrand Russell's theory of descriptions On Denoting
- On Her Majesty's Secret Service (1969 film) On Her Majesty's Secret Service
- On Human Nature
- On My Level — song by Wiz Khalifa featuring Too $hort On My Level
- On the 6 — Jennifer Lopez's debut album On the 6
- On the Beach (novel)
- On the Buses (British television sitcom) On the Buses
- On the Floor (Jennifer Lopez song) On the Floor
- On the Origin of Species — Charles Darwin's 1859 work On the Origin of Species
- On the Right Track (1981 film) On the Right Track
- On the Riviera (1951 film) On the Riviera
- On the Road — Jack Kerouac and the Beat-era road novel On the Road
- On the Waterfront (1954 film) On the Waterfront
- On-Line Encyclopedia of Integer Sequences (OEIS) On-Line Encyclopedia of Integer Sequences
- Onaga, Kansas
- Onagawa, Miyagi (coastal fishing town) Onagawa, Miyagi
- Onager (Equus hemionus): the Asian wild ass Onager
- Onagraceae — the Evening-Primrose and Willowherb Family Onagraceae
- Onam: Kerala's ten-day harvest festival and cultural celebration Onam
- Onancock, Virginia: Historic Harbor Town on the Eastern Shore Onancock, Virginia
- Onanì — municipality in Nuoro, Sardinia Onanì
- Onawa, Iowa
- Onaway, Idaho — small city in Latah County Onaway, Idaho
- Once Caldas (Colombian football club) Once Caldas
- Once Sent from the Golden Hall
- Once Upon a Time (TV series)
- Once Upon a Time in America
- Once Upon a Time in Hollywood
- Once Upon a Time in Mexico
- Once Upon a Time in the West
- Once Were Warriors (1994 film) Once Were Warriors (movie)
- Oncieu: Commune in Ain, Auvergne-Rhône-Alpes, France Oncieu
- Oncilla (Leopardus tigrinus): small spotted Neotropical wild cat Oncilla
- Oncogene: genes that promote uncontrolled cell growth Oncogene
- Oncology: The Study and Treatment of Cancer Oncology
- Ondefontaine — former commune in Calvados, Normandy Ondefontaine
- Ondjiva — capital of Cunene Province in southern Angola Ondjiva
- Ondrej Duda
- Ondřej Palát
- One (U2 song)
- One America Appeal
- One Bennett Park (Streeterville residential skyscraper) One Bennett Park
- One Billion Rising
- One Canada Square
- One Chase Manhattan Plaza (28 Liberty Street) One Chase Manhattan Plaza
- One Chicago — mixed‑use twin‑tower development in River North, Chicago One Chicago Square
- One Crazy Summer (1986 film) One Crazy Summer
- One Crimson Night — HammerFall live album and concert DVD One Crimson Night
- One Day in the Life of Ivan Denisovich
- One Day International (ODI): the limited-overs international cricket format One Day International
- One Direction (1D): British–Irish pop group formed on The X Factor One Direction
- One Fine Day (children's picture book) One Fine Day
- One Fish, Two Fish, Blowfish, Blue Fish (The Simpsons episode) One Fish, Two Fish, Blowfish, Blue Fish
- One Flew Over the Cuckoo's Nest (1975 film) One Flew Over the Cuckoo's Nest (movie)
- One Flew Over the Cuckoo's Nest — novel by Ken Kesey One Flew Over the Cuckoo's Nest (novel)
- One Foot in Heaven (1941 film) — Fredric March in a Clergyman Biographical Drama One Foot in Heaven
- One Foot in Hell (1960 film) One Foot in Hell
- One Hot Minute (Red Hot Chili Peppers album) One Hot Minute
- One Hour Photo (2002 film) One Hour Photo
- One Hundred and One Dalmatians (1961 film) One Hundred and One Dalmatians
- One Hundred Years of Solitude
- One in a Million (Aaliyah album)
- One Instruction Set Computer (OISC): Overview, Types, and Uses One instruction set computer
- One Laptop Per Child (OLPC): mission, XO laptop and educational software One Laptop Per Child
- One Liberty Plaza — office skyscraper in Lower Manhattan One Liberty Plaza
- One Little Indian (1973 film) One Little Indian (movie)
- One Magic Christmas (1985 film) One Magic Christmas
- One Magnificent Mile — mixed-use high-rise at the north end of Chicago's Magnificent Mile One Magnificent Mile
- One More Minute: a style-parody song by "Weird Al" Yankovic One More Minute
- One More Night (Maroon 5 song) One More Night
- One More Time (Daft Punk song) One More Time
- One More Train to Rob
- One Museum Park — residential skyscraper in Chicago's Museum Campus One Museum Park
- One Night Only (song) One Night Only
- One North Wacker (Chicago office skyscraper) One North Wacker
- One of the Boys (Katy Perry album) One of the Boys
- One Piece (manga and anime series) One Piece
- One Prudential Plaza (Chicago office tower) One Prudential Plaza
- One South Dearborn — Chicago office tower One South Dearborn
- One Step Closer (song) One Step Closer
- One Sweet Day — Mariah Carey and Boyz II Men duet One Sweet Day
- One Unit (Pakistan): creation, aims and legacy One Unit Scheme
- One World Film Festival
- One World Trade Center: overview, design, history and significance One World Trade Center
- One Worldwide Plaza
- China's One‑Child Policy: Origins, Implementation, Effects, and Reversal One-child policy
- One-design dinghy
- Issun-bōshi (One-inch Boy): summary, motifs, origins and cultural influence One-inch boy
- one-north MRT station (CC23) one-north MRT station
- One-party dominant state: definition, characteristics, history and examples One-party dominant state
- One-party state form of government where the country is ruled by a single political party
- One-time pad
- One-Two-Go Airlines Flight 269 — 2007 Phuket crash One-Two-GO Airlines Flight 269
- One-way function
- One-X — second studio album by Three Days Grace One-X
- OneDrive — Microsoft cloud storage, sync, and Office integration OneDrive
- Oneida County, Idaho
- Oneida County, New York
- Oneida, Illinois
- Oneida, Kansas: small city in Nemaha County Oneida, Kansas
- Oneiroi — Greek personifications of dreams Oneiroi
- Oneirology: the scientific study of dreams Oneirology
- Oneness Pentecostalism: Beliefs, History, and Distinctive Practices Oneness Pentecostalism
- ONEOK: U.S. Midstream Energy Company Specializing in Natural Gas and NGLs ONEOK
- Oneonta, Alabama: county seat and home of the Covered Bridge Festival Oneonta, Alabama
- OneRepublic — American pop rock band OneRepublic
- Ones (meanings, uses and contexts) Ones
- One's complement (bitwise inversion in binary arithmetic) Ones' complement
- Onești — city in Bacău County, Romania Onești
- Oneux, Somme — small commune in northern France Oneux
- oneworld (airline alliance) Oneworld
- Onex, Geneva — Swiss municipality Onex, Switzerland