- 100 Minutes
- 100 Seconds Encounter
- 2010 FIFA World Cup Shootout
- 24-hour Rule
- 3 A.M.
- 4G
- 4th Lucky Spot Competition
- 8-Pack
- ABS-CBN
- AJ Burman
- AJ Odudu
- Aadarsh Balakrishna
- Aajeedh Khalique
- Aarav Kizar
- Aari Arjunan
- Aaron Allard-Morgan
- Aaron Benton
- Aaron Frew
- Aaron Königs
- Aarti Solanki
- Aarya Babbar
- Aaryn Gries
- Aarón Reyes
- Aashka Goradia
- Aastad Kale
- Abby Plaatjies
- Abby Tiale Abigail
- Abdul Hakim
- Abdullah Yahya
- Abhijeet Bichukale
- Abhijeet Kelkar
- Abhinav Shukla
- Abhirami Suresh
- Abhirami Venkatachalam
- Abi Kassem
- Abijeet Duddala
- Abu Malik
- Abz Love Breen
- Ace Khumalo
- Achilles Samain
- Achiri Victor
- Adam Alayof
- Adam Jasinski
- Adam Kelly
- Adam Pike
- Adam Poch
- Adams Ngwenya
- Adara Molinero
- Additional Housemates
- Ade Herawati
- Adel Bespalov
- Adel Elseri
- Adela Smajić
- Adele Roberts
- Aden Theobald
- Adi Leon
- Aditi Rai
- Adjoa Mensah
- Adorkables
- Adria Klein
- Adrian (Romania 1 Contestant)
- Adriana Morales
- Adriana Sant'anna
- Adriana Volpe
- Adriana Xenides
- Adriano de Castro
- Adrienn Horváth
- Adrilles Jorge
- Adrián Uribe
- Adélia Soares
- Afrie Afdillah
- Afroditi Gerokonstanti
- Aga Shady
- Agnes Arabela Marques
- Agnieszka Raczyńska
- Agustina Quirós
- Agustín Belforte
- Agustín Flores
- Agustín Pappa
- Ahmed Aghil
- Ahneeka Onyii
- Aicha NK
- Aida Yespica
- Ailah Antopina
- Ailín Bourren
- Aina Solano
- Ainelén Thevenon
- Aisha McKinnon
- Aishwarya Dutta
- Aisleyne Horgan-Wallace
- Aizan Perez
- Aizyl Tandugon
- Ajaz Khan
- Akanksha Sharma
- Akash Dadlani
- Akeem Griffiths
- Akere Nerisa
- Akere Sexoo
- Akhil Sarthak
- Akie Poblete
- Ala'a Omar
- Alain Rochette
- Alan Lopes
- Alan Miramotos
- Alan Possamai
- Alan Wangsa
- Alan Zulcovsky
- Alasandra Johnson
- Alba Carrillo
- Albena Vuleva
- Alberto Mezzetti
- Aldred Gatchalian
- Alec Beall
- Alec Dungo
- Aleck Bovick
- Aleisha Cowcher
- Alejandra Martinez
- Alejandra Martínez
- Alejandra Procuna
- Alejandra Ávalos
- Alejandro Abad
- Alejandro Agell
- Alejandro Albalá
- Alejandro Garrido
- Alejandro Ibarra
- Alejandro Iglesias
- Alejandro Ocasiones
- Alejandro Restuccia
- Alejandro Solís
- Alekhya Harika
- Aleks & Vladi Dimitrovi
- Aleksandar Neradin
- Aleksandra Balawender
- Aleksandra Bogdanska
- Alen Macinić
- Aless Gibaja
- Alessandra Begliomini
- Alessandro Cecchi Paone
- Alessia-Millane Herren
- Alessia Prete
- Alex Anselmuccio
- Alex Asagwa
- Alex Biney
- Alex Cannon
- Alex Chege
- Alex Christie
- Alex Coladonato
- Alex Gonzaga
- Alex Holi
- Alex Manzizila
- Alex Ow
- Alex Reid
- Alex Reigenborn
- Alex Rose Lee
- Alex Sibley
- Alex Vilanova
- Alex Willett
- Alexander Lison Vaz
- Alexander O'Neal
- Alexandra Couillard
- Alexandra De-Gale
- Alexandra Ferreira
- Alexandre Ouellet
- Alfonso de Nigris
- Alfred Beruzil
- Alfredo Tores
- Ali Abinal
- Ali Forbes
- Ali Quli Mirza
- Ali Reza
- Alice Redwood
- Alicelma António
- Alicia Douvall
- Alida (Romania 1 Contestant)
- Alina Padikkal
- Aline Dahlen
- Aline Gotschalg
- Aline Mattos
- Aline Spears
- Alison Hammond
- Alison Irwin
- Alisson Guimarães
- Aljon Mendoza
- Aljur Abrenica
- All In
- Allan Liang
- Alliance
- Allison Nichols
- Allison White
- Almklausi Meier
- Alon Volkovitski
- Alonso Caparrós
- Alonso Jiménez
- Alphan Yuvalı
- Alphonso Williams
- Alvaro Montalván
- Aly (Romania 2 Contestant)
- Aly Goni
- Alyson Eckmann
- Alyssa Exala
- Alzira Andrade
- Amal Saleh
- Amalia Granata
- Aman Verma
- Amanda & Sam Marchant
- Amanda Barrie
- Amanda Craig
- Amanda Djehdian
- Amanda Fazekas
- Amanda Hansen
- Amanda Marqués
- Amanda Rodríguez
- Amanda Soares
- Amanda Zamora
- Amanda Zuckerman
- Amber Borzotra
- Amber Siyavus
- Ambra Lombardo
- Amelia Lily
- America's Care Package
- America's Eviction Vote
- America's Favorite Houseguest
- America's Field Trip
- America's Have-Nots
- America's Nominee
- America's Player
- America's Winner
- Amilia Stapelfeldt
- Amir Mian
- Amit Tiwari
- Amma Antwi-Agyei
- Amma Rajasekhar
- Amor Romeira
- Amos Halfon
- Amritha Suresh
- Amy & Sally Broadbent
- Amy Alexandra
- Amy Childs
- Amy Crews
- Amy Jackson
- Amélie Lussier
- América Eloisa Loras
- An Offer You Can't Refuse
- Ana-Marija Brdek
- Ana Carolina
- Ana Catharina França
- Ana Clara & Ayrton Lima
- Ana Climent
- Ana Gotovac
- Ana Guimarães
- Ana Isabel Ribeiro
- Ana Lúcia Silva
- Ana Marcela Alves
- Ana Marcela Tourné
- Ana Marković
- Ana María Giraldo
- Ana Mireles
- Ana Paula Costa
- Ana Paula Renault
- Ana Vrdoljak
- Anabel Pantoja
- Anabella Pezet
- Analice de Souza
- Analyse Talavera
- Analía Barrios
- Anamara Barreira
- Anamélia Silva
- Ananias Muanha
- Ananth
- Ananth Vaidyanathan
- Anastasia Tal
- Ancy Kovačec
- Andre Burger
- Andrea Abaya
- Andrea Denver
- Andrea González
- Andrea Mainardi
- Andrea Montovoli
- Andrea Murillo
- Andrea Rincón
- Andrea Zelletta
- Andrea Zenga
- Andreea (Romania 1 Contestant)
- Andreea (Romania 2 Contestant)
- Andreia Filipe
- Andreia Leal
- Andreia Silva
- Andressa Ganacin
- Andrew Brady
- Andrew Cruickshanks
- Andrew Davidson
- Andrew Edmonds
- Andrew Gordon
- Andrew Ian Gordon
- Andrew James Gordon
- Andrew Miller
- Andrew Monaghan
- Andrew Stone
- Andrew Tate
- Andrew Temment
- Andrew Witchie
- André Abrantes
- André Brouillette
- André Filipe
- André Gabeh
- André Martinelli
- André Silva
- André Vincent
- Andrés Ogliastri
- Andy (BBQuebec 1 Housemate)
- Andy Herren
- Andy Kumar
- Andy Silva
- Andy West
- Aneal Ramkissoon
- Anezi Nezirević
- Angel Awotarigha
- Angel McKenzie
- Angela Aiken
- Angela Calina
- Angela Clancy
- Angela Losito
- Angela Munhoz
- Angela Rummans
- Angela Tungol
- Angelika Głaczkowska
- Angelo Collins
- Angelo Pasco
- Angelo Sanzio
- Angie Best
- Angie Bowie
- Angie Murray
- Angie Pereira
- Angie Swindell
- Angie Tackie
- Angélica Gallettino
- Angélica Jordão
- Angélica Marques
- Angélica de Castro
- Ania Iglesias
- Anibal (Big Brother Portugal 3 Housemate)
- Anick Gervais
- Anil Thatte
- Anita Advani
- Anita Bloomfield
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