All articles starting with O
9,097 articles
Olaf Holtedahl
Olaf Holtedahl (1885–1975) was a Norwegian geologist, professor at Oslo, who led polar expeditions to Novaya Zemlya and Antarctica and first recognized the great Precambrian–Cambrian glaciation.
Olaf Lies
Olaf Lies is a German politician of the Social Democratic Party who serves as Minister-President of Lower Saxony, after serving as its Minister of Economic Affairs, Transport, Construction, and Digitalization.
Olaf Ludwig
Olaf Ludwig (born 1960, Gera) is a German former road cyclist, Olympic road race champion for East Germany at Seoul 1988, 1980 team time trial silver medalist, 1990 Tour de France green jersey winner, and 1992 World Cup champion.
Olaf M. Magnussen
Olaf M. Magnussen is a professor of solid-state physics at the University of Kiel who studies electrode surfaces at the atomic scale, using video-STM and synchrotron X-ray scattering.
Olaf Ørvig
Olaf Ørvig (1889–1939), Norwegian sailor and shipping businessman; won 1920 Antwerp Olympic gold in the 12-metre class aboard Heira II with brothers Erik and Thor Ørvig, of Bergens Seilforening.
Olaf Pollack
Olaf Pollack (born 1973, Räckelwitz) is a retired German track and road sprint cyclist; Olympic team pursuit gold Sydney 2000 in world record 3:59.710, Giro d'Italia pink jersey 2004 and 2006, suspended two years for EPO (Dynepo) in 2009.
Olaf Pongs
Olaf Pongs is a German molecular biologist known for the molecular biology of voltage-gated potassium channels, including cloned Shaker and rat brain channel genes and the 1994 Nature β-subunit paper.
Olaf Sæther
Olaf Sæther (1871-1945), Norwegian sport shooter from Sør-Odal, not to be confused with teammate Ole Sæther; won Olympic gold in the 1908 free rifle team event and silver in 1912.
Olaf Schneewind
Olaf Schneewind (1961–2019) was a German-born microbiologist and chair of microbiology at the University of Chicago, known for discovering sortase and studying Staphylococcus aureus, anthrax, and plague.
Olaf Scholz
Olaf Scholz (born 1958, Osnabrück) is a German SPD politician, Federal Chancellor 2021–2025 leading the first traffic-light coalition, architect of the Zeitenwende defense shift, defeated in 2025 by Friedrich Merz.
Olaf Sporns
Olaf Sporns is a German-born neuroscientist at Indiana University Bloomington who coined the term "human connectome" in 2005 and mapped the human brain's network structure.
Olaf Thorsten Joachim
Olaf Thorsten Joachim is a German politician who was appointed State Secretary at the Federal Ministry for Housing, Urban Development and Building in May 2025, succeeding Rolf Bösinger.
Olaf Tryggvason
Olaf Tryggvason (Olav Tryggvason, Old Norse Óláfr Tryggvason), born 968, was king of Norway 995–1000 who forcibly promoted Christianity, fought at Maldon in 991, founded Nidaros, minted Norway's first coins, and died at the Battle of Svolder.
Olaf Tufte
Olaf Karl Tufte (1976–2026), Norwegian rower, double Olympic single sculls champion (2004, 2008), seven-time Olympian 1996–2021, world champion 2001 and 2003, Thomas Keller Medal 2021; died of cardiac arrest at 50.
Olaf van Schilling
Olaf, Baron von Schilling (Olaf Georg von Schilling, 1943-2018) was a West German freestyle swimmer of Wasserfreunde Wuppertal who set 1965 4x200 m freestyle relay world records, won 1970 European relay gold, and swam at the 1968 and 1972 Olympics.
Olaf Winter
Olaf Winter (born 1973, Neustrelitz, Germany) is a German sprint kayaker, KG Essen club, who won K4 1000 m gold at the 1996 Atlanta Olympics, finished fourth in K2 at Sydney 2000, and took 1999 World bronze.
Olaf Zinke
Olaf Zinke (born 1966, Bad Muskau) is a German former speed skater, SC Dynamo Berlin, who won surprise 1,000 m gold at Albertville 1992 in 1:14.85, 0.01 s ahead of Kim Yun-man; two-time Olympian.
Olaf's Frozen Adventure
Olaf's Frozen Adventure is a 2017 Disney Animation Christmas featurette, 21-22 minutes, directed by Kevin Deters and Stevie Wermers-Skelton, released with Coco and on ABC, starring Josh Gad, with four new songs.
Olafat Patera
Olafat Patera, an IAU-named 119-km-wide volcanic patera on Jupiter's moon Io at 62.66°S, 244.39°W, named in 2023 after a Caroline Islands fire-bringing demigod.
Olafs Daugulis
Olafs Daugulis is a Latvian-born chemist and Robert A. Welch Chair at the University of Houston, known for introducing the widely used 8-aminoquinoline directing group in 2005.
Ólafur Arnalds
Ólafur Arnalds (born 1986, Mosfellsbær, Iceland) is a neo-classical composer, multi-instrumentalist, and producer on Erased Tapes, half of the techno duo Kiasmos, and scorer of Broadchurch, Another Happy Day, and Surface.
Ólafur Darri Ólafsson
Ólafur Darri Ólafsson (born 1973, Connecticut) is an Icelandic-American actor, producer, and screenwriter known for Trapped (Andri), The Deep, Severance (Mr. Drummond), and his ACT4 series Reykjavík Fusion.
Olafur Eliasson
Olafur Eliasson (born 1967, Copenhagen) is an Icelandic-Danish installation artist behind The weather project (Tate Modern, 2003), Ice Watch, and Studio Olafur Eliasson in Berlin, known for light, water, and climate-themed art.
Olam Food Ingredients
Olam Food Ingredients, branded as ofi, is a global business-to-business supplier of food and beverage ingredients in cocoa, coffee, dairy, nuts, and spices, created by Olam Group in January 2020.
Olam International
Olam International, the Singapore food and agri-business founded in 1989 trading Nigerian cashews, became Olam Group Limited (SGX: VC2) in 2022, re-organised into ofi, Olam Agri and OGH, and sold Olam Agri to SALIC.
Olamide
Olamide (Olamide Gbenga Adedeji, Baddo), Nigerian rapper born 1989 in Bariga, Lagos; founder of YBNL Nation, debut hit Eni Duro (2010), eleven albums from Rapsodi to Olamidé, mentor to Asake, Fireboy DML, Adekunle Gold.
Öland
Öland (Ölandsbron link) is a 140-km-long Swedish limestone island in the Baltic Sea, home to Stora Alvaret, Europe's largest alvar, and the UNESCO Agricultural Landscape of Southern Öland inscribed in 2000.
Olandria
Olandria (Olandria Lashae Carthen, born 1998, Decatur, Alabama) is an American model and TV personality, runner-up with Nic Vansteenberghe on Love Island USA season 7 (2025), later a fashion figure known as the "Bama Barbie."
Olanzapine
Olanzapine (Zyprexa) is an atypical antipsychotic blocking D2 and 5-HT2A receptors, FDA-approved in 1996 for schizophrenia and in 2000 for bipolar mania; highly effective but strongly linked to weight gain and metabolic syndrome.
OLAP cube
An OLAP cube is a multidimensional data structure in online analytical processing that indexes measures by dimensions such as time, geography, and product, letting analysts aggregate business data quickly.