| A | Amon | fictional character from The Legend of Korra |
| AT | Amos Tversky | Israeli psychologist (1937–1996) |
| AY | Amr Yousef | |
| A | aMSa | professional Super Smash Bros. Melee player, aka Masaya Chikamoto |
| A | Amumu | fictional character from League of Legends |
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Amybeth McNulty | Irish-Canadian actress |
| AB | Amy Brookheimer | fictional character from Veep |
| AC | Amy Carlson | American cult leader |
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Amy Chua | American law professor and writer (born 1962) |
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Amy Klobuchar | American politician and lawyer (born 1960) |
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Amy March | fictional character from Little Women |
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Amy Ryan | American actress (born 1968) |
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Amy Smart | American actress |
| AW | Anais Watterson | fictional character from The Amazing World of Gumball |
| AR | Anand Ranganathan | Ph.D. University of Illinois at Urbana-Champaign 2005 |
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Anatoly Karpov | Russian chess player |
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Anawrahta | founder of the Pagan Empire |
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Anaxagoras | 5th-century BC Greek philosopher |
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Anaximenes of Miletus | Greek Ionian Pre-Socratic philosopher (c.586–c.526 BC) |
| AM | Andie McPhee | fictional character from Dawson's Creek |
| AA | András Arató | Hungarian Internet meme personality, former electrical engineer (1945–) |
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André 3000 | American rapper, singer, record producer and actor |
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Andrea Bocelli | Italian tenor and singer-songwriter (born 1958) |
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Andreas Blass | mathematician |
| AC | Andreas Carlund | Swedish philosopher and Youtuber |
| AM | Andreas Moritz | German alternative therapist |
| AT | Andrea Tantaros | American conservative politician analyst |
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André Breton | French writer and poet, co-founder of Surrealism (1896–1966) |
| AJ | Andrei Jikh | American YouTuber |
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Andrei Platonov | Russian author (1899–1951) |
| AR | Andrei Rublev | fictional character from Andrei Rublev |
| AS | Andrei Sator | fictional character from Tenet |
| AGE | Andrés Gómez Emilsson | Computational psychologist and director of the Qualia Research Institute |
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Andrés Manuel López Obrador | Mexican politician. President of Mexico from 2018 to 2024 |
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André the Giant | French professional wrestler and actor (1946–1993) |
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Andrew Anglin | American neo-Nazi and webhost |
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Andrew Copson | British humanist leader |
| AD | Andrew Detmer | fictional character from Chronicle |
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Andrew Doyle | British comedian, journalist, and political satirist |
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André Weil | French mathematician (1906-1998) |
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Andrew Eldritch | British singer |
| AG | Andrew Gray | American actor |
| AK | Andrew Kirby | Self-help YouTuber |
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Andrew Marr | British journalist |
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Andrew Neil | Scottish journalist and broadcaster |
| AR | Andrew Rea | American filmmaker and creator of the YouTube channel "Binging with Babish" |
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Andrew Robinson | American actor and professor |
| AR | Andrew Ryan | fictional character from BioShock |
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Andrew Schulz | American comedian and actor |
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Andrew Scott | Irish actor (born 1976) |