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Oluwasanmi Koyejo
Oluwasanmi (Sanmi) Koyejo is a computer scientist and neuroscientist who is an Assistant Professor of Computer Science at Stanford University and received the 2025 PECASE award.
Olympiastadion (Berlin)
Olympiastadion Berlin, also known as the Berlin Olympic Stadium, is a 74,475-seat stadium in Berlin, built for the 1936 Olympics and home of Hertha BSC.
Olympic Air (Ολυμπιακή)
Olympic Air (Ολυμπιακή) is a Greek regional airline created in 2009 from the privatized Olympic Airlines, owned by AEGEAN Airlines since 2013 and known for operating subsidized island routes.
Olympic-class ocean liner
Olympic class (Olympic, Titanic, Britannic) was a trio of British transatlantic passenger liners built by Harland & Wolff for the White Star Line between 1908 and 1915.
Olympus Energy
Olympus Energy, formerly Huntley & Huntley Energy Exploration, was a privately held natural gas producer in Canonsburg, Pennsylvania, whose Marcellus and Utica assets were acquired by EQT in 2025.
OM System OM-3
The OM System OM-3 is a mid-range mirrorless camera made by OM Digital Solutions, announced in February 2025, combining a retro-styled body with the flagship OM-1 Mark II's sensor.
OM5 multimode fiber
OM5 multimode fiber, also called wideband multimode fiber (WBMMF), is a 50 µm graded-index multimode fiber standardized in 2016 to carry several short wavelengths over one fiber pair.
OMA (architecture firm)
OMA (Office for Metropolitan Architecture) is an international architecture firm founded by Rem Koolhaas in 1975, known for the Seattle Central Library and CCTV Headquarters in Beijing.
Omaezaki power station
The Omaezaki power station, formally the Omaezakikou Biomass Power Plant, is a 75.0 MW biomass plant at the Port of Omaezaki in Shizuoka Prefecture, Japan, operating since 2025.
Omaha Public Power District
Omaha Public Power District is a not-for-profit, customer-owned public electric utility and political subdivision of Nebraska serving Omaha and 13 counties, created by the legislature in 1946.
Oman Air (الطيران العماني)
Oman Air (الطيران العماني) is the state-owned flag carrier of Oman, headquartered in Muscat. Founded in 1993, it flies to about 45 destinations from Muscat International Airport and joined the oneworld alliance in 2025.
Oman Electricity Transmission Company
Oman Electricity Transmission Company (OETC) is the owner and operator of Oman's main electricity transmission network and its system operator, formed in May 2005 under Royal Decree 78/2004.
Oman Main Oil Line
The Oman Main Oil Line (MOL) is the crude oil pipeline network of Oman, carrying oil from Petroleum Development Oman's fields to the Mina al Fahal export terminal.
Oman Qalhat LNG Terminal
The Oman Qalhat LNG Terminal is a liquefied natural gas export terminal at Qalhat, near Sur in Oman, with a capacity of 11.4 million tonnes a year.
Omantel
Omantel (Oman Telecommunications Company) is Oman's incumbent telecom operator, listed in Muscat, which in 2025 served 3.7 million subscribers and controlled a 21.91% stake in Kuwait's Zain Group.
Omar F. Mohammed
Omar F. Mohammed is a physical chemist and professor at KAUST in Saudi Arabia who leads ultrafast electron imaging research on solar cells and X-ray scintillators.
Omarchy
Omarchy is an opinionated Linux distribution built on Arch Linux and the Hyprland tiling window manager, created by Ruby on Rails creator David Heinemeier Hansson and released in 2025.
OMAX (company)
OMAX Corporation is an American manufacturer of abrasive waterjet cutting systems based in Kent, Washington. Founded in 1993, it has been a wholly owned subsidiary of Hypertherm Associates since 2019.
Ombilin Coal Mining Heritage of Sawahlunto
Ombilin Coal Mining Heritage of Sawahlunto, a UNESCO World Heritage Site since 2019, is a serial Dutch colonial industrial ensemble in West Sumatra: mines, company town, 155 km rack railway, and Emmahaven port, worked partly by convict orang rantai labour.
Ombinskoye Oil Field
Ombinskoye Oil Field (Омбинское месторождение) is an onshore oil field near Nefteyugansk in western Siberia, Russia, discovered in 1978, developed by Rosneft's RN-Yuganskneftegaz, with reserves of about 247 million barrels.
Omdia
Omdia is a global technology market research and advisory firm headquartered in London, formed in 2020 from Ovum, Heavy Reading, Tractica, and most of IHS Markit's technology research.
Ome Railway Park
Ome Railway Park (青梅鉄道公園), Ome, Tokyo; open-air JR East railway museum opened 1962 for the 90th anniversary of Japanese railways; 13 vehicles including a British-built 1872 No. 3 locomotive, D51, and enterable 0 series Shinkansen cab; reopened March 2026.
OMEGA laser
The OMEGA laser is a 60-beam inertial confinement fusion research laser at the University of Rochester's Laboratory for Laser Energetics, first fired in 1995, that implodes fusion fuel capsules by direct drive.
OMEGA laser facility
The OMEGA laser facility is an inertial confinement fusion research complex at the University of Rochester in Rochester, New York, built around the OMEGA-60 and OMEGA EP laser systems.
Omega SA
Omega SA, also known as Omega Watches, is a Swiss luxury watchmaker founded by Louis Brandt in 1848 and based in Biel/Bienne, known for the Speedmaster, worn on the Moon.
Omega Seamaster
The Omega Seamaster is a family of watches produced by the Swiss watchmaker Omega since 1948, spanning everyday and divers' models, and worn by James Bond in every 007 film since 1995.
Omega Speedmaster
The Omega Speedmaster, also known as the Speedmaster Professional, is a Swiss chronograph wristwatch made by Omega since 1957 that NASA flight-qualified in 1965 and that was worn on the Moon.
omega.x haptic devices
omega.x is the shared base design of Force Dimension's omega.3, omega.6, and omega.7 desktop haptic devices, which render contact forces at rates up to 4 kHz.
OmegaPRM
OmegaPRM is a divide-and-conquer Monte Carlo tree search algorithm introduced by Google DeepMind researchers in June 2024 to label the first error in a chain of thought for training process reward models.
Omegle
Omegle was a free online chat website, active from 2009 to 2023, that anonymously paired two random users in text or video chat with no accounts or profiles.