Sportspeople
- Abédi Pelé (Abédi Ayew)
- Action Jackson (André Action Diakité Jackson)
- Akebono Taro (Chad Haaheo Rowan)
- Al "Bummy" Davis (Abraham Davidoff)
- Bebeto (José Roberto Gama de Oliveira)
- Cafu (Marcos Evangelista de Moraes)
- Careca (Antonio de Oliveira Filho)
- Casey Stengel (Charles Dillon Stengel; originally named after the initials of his hometown of Kansas City, Missouri, or "K.C.")
- Chad Ochocinco (Chad Javon Johnson)
- Chipper Jones (Larry Wayne Jones, Jr.)
- Cristiano Ronaldo (Cristiano Ronaldo dos Santos Aveiro)
- Deco (Anderson Luiz de Sousa)
- Dick Tiger (Richard Ihetu)
- Dida (Nélson de Jesus Silva)
- Drift Samurai (Takahiro Imamura)
- Duda (Sérgio Paulo Barbosa Valente)
- Eduardo Golding (David Edward Michael Gordon Copleston)
- Garrincha (Manuel Francisco dos Santos)
- El Inglés (Harry Evans) - Bullfighter
- Garry Kasparov (Gari Weinstein)
- Raymond Kopa (Raymond Kopaszewski)
- He hate me (Rod Smart)
- Henri Cornet (Henri Jaudry)
- Henry Arundel (Henry Fitzalan-Howard)
- Ickey Woods (Elbert L. Woods)
- Jim McKay (James Kenneth McManus)
- JJ Lehto (Jyrki Järvilehto)
- Joe Louis (Joseph Louis Barrow)
- John Winter (Louis Krages)
- Johnny Dumfries (John Crichton-Stuart)
- Kaká (Ricardo Izecson dos Santos Leite)
- Kareem Abdul-Jabbar (Ferdinand Lewis Alcindor, Jr.; legally changed name after conversion to Islam)
- Karim Abdul-Jabbar (Sharmon Shah)
- Khaosai Galaxy (Sura Saenkham)
- Kid McCoy (Norman Selby)
- Kline (Roland Lam)
- Konishiki Yasokichi (Salevaa Atisanoe)
- Kuba (Jakub Błaszczykowski)
- Leon Duray (George Stewart)
- Lolo Jones (Lori Jones)
- Lucien Petit-Breton (Lucien Mazan)
- Míchel (José Miguel González Martín)
- Mercury Morris (Eugene Edward Morris)
- Messi (Lionel Andrés Messi)
- Muggsy Bogues (Tyrone Curtis Bogues)
- Muhammad Ali (Cassius Marcellus Clay Jr.)
- Musashimaru Koyo (Fiamalu Penitani)
- Nenê (Maybyner Rodney Hilario; this is now his legal name)
- Pelé (Edson Arantes do Nascimento)
- Pee Wee Reese (Harold Peter Henry Reese)
- Pierre Levegh (Pierre Bouillin)
- Razor Ruddock (Donovan Ruddock)
- Rivaldo (Vitor Borba Ferreira)
- Rocky Marciano (Rocco Francis Marchegiano)
- Ronaldo (Ronaldo Luís Nazário de Lima)
- Ronaldinho (Ronaldo de Assis Moreira))
- Satchel Paige (Leroy Robert Paige)
- Smush Parker (William Henry Parker)
- Sparky Anderson (George Lee Anderson)
- Spud Webb (Anthony Jerome Webb)
- Stanley Ketchel (Stanislaus Kiecal)
- Sugar Ray Leonard (Ray Charles Leonard)
- Sugar Ray Robinson (Walker Smith Jr.)
- Suso (Jesus Fernandez Saez)
- Takanohana Koji (Koji Hanada)
- Tiger Woods (Eldrick Tont Woods)
- Tony Zale (Anthony Florian Zaleski)
- Wakanohana Masaru (Masaru Hanada)
- Whitey Ford (Edward Charles Ford)
- Zico (Arthur Antunes Coimbra)
Read more about this topic: List Of Pseudonyms