Birth Chart and Horoscope of October 21 births
- Abdullah Hussain Haroon
- Ademir Vieira
- Ahmed Sherweda
- Airam Cabrera
- Ajaz Patel
- Al Cameron
- Alan Schaaf
- Alberto Iglesias
- Alex O'Hara
- Alexi Spann
- Allan Glover
- Altin Hoxha
- Ana Paula Polegatch
- Andrea Checchi
- Andrew Cancio
- Andy Picheta
- Anele Ngcongca
- Ann Carlson
- Anne M. Mulcahy
- Annette Drummond
- Ariana Rodriguez
- Arne Sandstø
- Artsyom Vaskow
- Artur Aleksanyan
- Arun Sarin
- Ashok Lavasa
- Attila the Stockbroker
- Auden Thornton
- Barry Dominey
- Ben Howlett
- Bengali-Fodé Koita
- Bernd Brexendorf
- Betty Oyella Bigombe
- Blanca Suárez
- Brad Pirie
- Brian Johnson (footballer, born 1955)
- Brian Tobin
- Buddy Hardeman
- C. H. Vijayashankar
- Candice Dianna
- Carlos Flores Rico
- Carmen Carter
- Catherine Hardwicke
- Charles Rodman Campbell
- Chris Beatty (cricketer)
- Christina Black
- Dairese Gary
- Dale Jennings
- Daniel Schorn
- Daniel Smales
- Daniel Tătar
- Darius Khondji
- David Reindorp
- Dean Lewis
- Dionisio Loya Plancarte
- Dmitri Zyuzin
- Dmitry Sergeyevich Kosenko
- Ed Ruth
- Eleonora Giorgi
- Elías Viñoles
- Emma Firyana Saroji
- Ernest Spiteri-Gonzi
- Estanislao Argote
- Garth Gerhart
- Geoffry Hairemans
- Georgi Bratoev
- Glen Powell
- Gonzalo Verdú
- Göran Bjerendal
- Hari Nef
- Harshad Khadiwale
- Hope Hicks
- Hélder Silva Santos
- Ian Mackay (rugby league)
- Igor Polygalov
- Indra Viki Okvana
- Isabella Löwengrip
- Jackie Chamoun
- Jacques Blanc
- Jane Ellen Ibur
- Jeff Cook (basketball)
- Jerry Garvin
- Jimmy Joubert
- John Siceloff
- Johnny Davis (basketball)
- Jon Kreft
- Jonathan Parr
- Jonathan Viera
- Jordan Callahan
- Jorge Labarga
- Joseph Enzweiler
- Joseph W. Walker
- Joshua Furno
- Judelin Aveska
- Julie King
- Julie Westwood
- Justin De Fratus
- Kasali Yinka Casal
- Kenneth Ouriel
- Kevin Briceño
- Klaus Ludwiczak
- Kuwar Virk
- Lena Platonos
- Leo Kirch
- Leonardo Ferreyra
- Liam Cameron
- Linda Phillips
- Linda Tuero
- Luciano Marangon
- Luke Murphy
- Luther Blue
- Mads Dahm
- Manuel Balela
- Marc Johnson (musician)
- Marcel Răducanu
- Margo Velema
- Maria Elfira Christina
- Mark Rendall
- Mark S. Ghiorso
- Mateusz Cieluch
- Mathieu Peybernes
- Matome Mathiane
- Matt Weiss
- Maurício (footballer, born October 1988)
- May'n
- Mehdi Charef
- Micael Priest
- Michael Goschka
- Mike Davis (basketball, born 1988)
- Mike Tully
- Mohamed Bentiba
- Mohammed Mudhasir
- Moubani Sorcar
- Mădălin Mihăescu
- Natalya Komarova
- Nathalie Bock
- Nathan Fox (triple jumper)
- Neil Howe
- Nirmal Chettri
- Oliver Wilde
- Omar Slimi
- Ousman Jallow
- Patricia Anne Gaughan
- Patrick S. Moore
- Paul Greco
- Paul Philipp
- Philip Kwok
- Rabah Gamouh
- Raidel Acea
- Raimo Seppänen
- Rakan Al-Khalidi
- Rambo Rajkumar
- Ramón Lentini
- Raymond Otim
- Rehan Khan (cricketer)
- Rick Wagner
- Ricki Olsen
- Rita Kirst
- Robert C. Green
- Ronald McNair
- Roy Nichols
- Sam Vokes
- Sara Kyle
- Sarah Beth James
- Scott Murawski
- Scott Rendell
- Shammi Kapoor
- Shannon Rick
- Shea Farrell
- Sho Iwasaki
- Solomon Elimimian
- Stav Beger
- Steph Davies
- Sudjadnan Parnohadiningrat
- Susannah King
- Šakir Redžepi
- Taylor Morgan
- Ted Gioia
- Terry Rocavert
- Thaddeus Gibson
- Thomas G. Power
- Tiago Abravanel
- Tim Bardsley
- Tom Eastman
- Tom Flanagan (footballer)
- Tony Junior
- Toshikazu Soya
- Toshiyuki Nagashima
- Tyson Hinz
- Valentin Bratoev
- Valts Eiduks
- Virendra Singh Mast
- Víctor Andrés
- Wang Huiqin
- William T. Wiley
- Willie Perkins Sr.
- Wolfgang Ketterle
- Xiong Fei
- Yukimasa Kishino
- Zbigniew Pierzynka