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Alex Karp
Alex Karp, also known as Alexander Caedmon Karp, is an American technology executive who co-founded Palantir Technologies in the early 2000s and serves as its chief executive officer.
Alex Karpovsky
Alex Karpovsky (born 1975, Newton, Massachusetts) is an American actor and filmmaker, Ray on HBO's Girls, Jed in Tiny Furniture, and director-star of The Hole Story, Rubberneck, and Red Flag.
Alex Karras
Alex Karras (1935-2012), Detroit Lions defensive tackle 1958-70, 1963 gambling suspension, Pro Football Hall of Fame Centennial Class of 2020, later actor as Mongo in Blazing Saddles and star of Webster.
Alex Katz
Alex Katz (born 1927, Brooklyn, New York) is an American figurative painter known for large-scale portraits, landscapes, and painted cutouts in flat, bold color, active for more than eight decades.
Alex Kendall
Alex Kendall, born 1992, is a New Zealand entrepreneur and AI researcher who co-founded London-based autonomous-driving company Wayve in 2017 and leads it as chief executive.
Alex Kendrick
Alex Kendrick (born 1970, Athens, Georgia) is an American Baptist pastor, director, writer, and actor behind Flywheel, Facing the Giants, Fireproof, Courageous, War Room, Overcomer, and The Forge (2024), first via Sherwood Pictures, then Kendrick Brothers Productions.
Alex Kennon
Alex Kennon is an Italian tech house DJ and producer from Barletta, based in Ibiza, known for 'Apache' with Pete Tong and a 2018 DJ Award.
Alex Kidd (musician)
Alex Kidd, real name Alex Laddin, is a British hard dance and hardcore DJ and producer from Manchester, England, active since the early 2000s, known for the Kiddfectious label.
Alex Kidd in Miracle World DX
Alex Kidd in Miracle World DX is Jankenteam's 2021 remake of Sega's 1986 Master System platformer, with HD pixel art, remastered music, new levels, Retro/Classic modes, and Boss Rush, released June 2021 for Switch, PS4/PS5, Xbox, and PC.
Alex Kidd in the Enchanted Castle
Alex Kidd in the Enchanted Castle (アレックスキッド天空魔城, Alex Kidd: Tenkuu Majou) is Sega's 1989 Mega Drive/Genesis platformer, the only Alex Kidd game on that console, known for rock-paper-scissors boss duels and mixed-to-negative reviews.
Alex Kingston
Alex Kingston (born 1963) is an English actress, RADA-trained and a former RSC member, known for Dr Elizabeth Corday in ER (1997-2009), BAFTA-nominated in Moll Flanders, and Professor River Song in Doctor Who.
Alex Kister
Alex Kister (born 2003, Richfield, Minnesota) is the American YouTuber who created the analog horror series The Mandela Catalogue in 2021, also runs Mystifying Oracle, and is developing a feature film adaptation.
Alex Kolodin
Alex Kolodin is an American attorney and Republican member of the Arizona House of Representatives from the 3rd district who won the July 2026 primary for Arizona secretary of state.
Alex Kontorovich
Alex Kontorovich is an American mathematician at Rutgers University known for work on thin orbits in number theory and for winning the AMS's 2014 Conant Prize.
Alex Kopacz
Alex Kopacz (Alexander Kopacz), Canadian bobsledder born 1990 in London, Ontario; won two-man gold at PyeongChang 2018 with Justin Kripps in a historic tie with Germany, after starting bobsleigh at 23 from shot put.
Alex Kozinski
Alex Kozinski (born 1950), Romanian-born American judge; Ninth Circuit judge 1985–2017 under Reagan, chief judge 2007–2014; known for Mattel v. MCA (Barbie Girl), "Criminal Law 2.0", and his December 2017 resignation over sexual misconduct allegations by 15 women.
Alex Krizhevsky
Alex Krizhevsky is a machine learning scientist, born in Ukraine and raised in Canada, whose 2012 AlexNet network started the deep learning boom in computer vision.
Alex Krycek
Alex Krycek, played by Nicholas Lea, is a recurring double agent and antagonist in The X-Files, introduced in "Sleepless" (1994) as Mulder's partner spying for the Cigarette Smoking Man, later a rogue operative killed in "Existence."
Alex Kurtzman
Alex Kurtzman (born 1973) is an American screenwriter, producer, and director who oversees the Star Trek television franchise through his company Secret Hideout; he co-wrote Star Trek (2009) and directed The Mummy.
Alex L. Kolodkin
Alex L. Kolodkin is a neuroscientist at Johns Hopkins School of Medicine who led the discovery of the semaphorin guidance-cue family and co-identified its first receptor, neuropilin-1.
Alex La Guma
Alex La Guma (Justin Alexander La Guma, 1925–1985) was a South African novelist, journalist, and anti-apartheid activist whose fiction about District Six made him a leading activist writer.
Alex Lasarenko
Alex Lasarenko (1963-2020) was an American composer, Elias Arts creative director, and founder of Tonal Sound in New York; he scored films like Dinner Rush and The Loneliest Whale and was later identified as the uncredited composer of the Disney Channel's four-note theme.
Alex Lawther
Alex Lawther (Alexander Jonathan Lawther, born 1995) is an English actor known for young Alan Turing in The Imitation Game, James in The End of the F*ing World, Karis Nemik in Andor, and Hermit in Alien: Earth.
Alex LeBrun
Alex LeBrun is a French AI entrepreneur and CEO of AMI Labs, the Paris AI lab founded by Yann LeCun, after cofounding Nabla and selling Wit.ai to Facebook.
Alex Lee (California politician)
Alex Lee is an American Democratic politician in the California State Assembly, first elected in 2020 as California's first openly bisexual legislator and youngest Asian American lawmaker.
Alex Len (Олексій Юрійович Лень)
Alex Len (Олексій Юрійович Лень), Ukrainian center born 1993 in Antratsit; Maryland product drafted fifth in 2013 by Phoenix Suns; 12 NBA seasons, 708 games, later Real Madrid and Baskonia.
Alex Lifeson
Alex Lifeson (Aleksandar Živojinović, born 1953) is the Canadian guitarist and co-founder of Rush, known for open-string chord voicings, the Lerxst gear line, Envy of None, and the 2026 Fifty Something reunion tour.
Alex Mack
Alex Mack (born 1985) is a former NFL center, 21st overall pick in 2009, who played 13 seasons for the Browns, Falcons, and 49ers, started all 196 games, made seven Pro Bowls, won the 2008 Campbell Trophy, and entered the College Football Hall of Fame in 2025.
Alex Macqueen
Alex Macqueen (Alexander Tulloch Macqueen), English actor born in Epsom, Surrey, known for Julius Nicholson in The Thick of It, Neil's Dad in The Inbetweeners, Holby City's Dr Keith Greene, and a 2019 BAFTA nomination for Sally4Ever.
Alex Mans
Alex Mans, born Alexander Mans, is a Dutch entrepreneur based in the United States who founded the travel technology company FLYR in 2013 and leads it as chief executive officer.