Grande Fratello 12 was the twelfth season of the Italian version of the reality show franchise Big Brother. The show premiered on 24 October 2011 and concluded on 1 April 2012. Alessia Marcuzzi returned as the main host of the show. The house had been radically renewed from the last season. The winner of the season, Sabrina Mbarek received a €240,000 grand prize.

Housemates Housemates Age Birthplace Occupation Day entered Day exited Status Sabrina Mbarek 21 Udine Student 78 161 Gaia Elide Bruschini 23 Rome Model and hostess 1 161 Patrick Ray Pugliese 34 Teheran, Iran TV personality, Grande Fratello season 4 housemate 113 161 Franco Giusti 30 Rome Physiotherapist 50 161 Martina Pascutti 21 Turin Photomodel 29 161 Armando Avellino 25 Catania Architect 29 154 Ilenia Pastorelli 25 Rome Student 1 154 Vito Mancini 26 Parma Student 29 147 Kevin Cagnardi 20 Borgosesia Unemployed 78 147 Cristina Del Basso 24 Varese Showgirl, actress and model, Grande Fratello season 9 housemate 113 140 Valentina "Vale" Marconi 32 Quarata Butcher 120 140 Valentina Lanotte 22 Modugno Showroom business owner 78 133 Floriana Messina 22 Potenza Student 1 133 Ferdinando Giordano 31 Salerno TV personality, Grande Fratello season 11 housemate 113 127 Gaetano De Robertis 32 Bari Event organizer 78 125 Giusy Muscia 25 Niscemi Traveller 78 120 Enrica Maria Saraniti 23 Catania Psychologist 8 120 Fabrizio Conti 31 Viareggio Tattoo artist 50 113 Amedeo Aterrano 23 Naples Salesman and model 1 106 Chiara Giorgiani 22 Milan Public relations 1 99 Daniel Mkongo 21 Sorengo, Switzerland Model, Secret Story season 5 housemate 78 92 Rudolf Mernone 23 Rome Rugby player 1 92 Monica Sirianni (†) 25 Sydney, Australia English teacher 64 92 Luca Di Tolla 34 Eboli Student and former scientific informant 1 85 Yassine Mokdad Mamaar 24 Gavardo Dancer and personal trainer 50 78 Caterina Siviero 25 Mestre Dental Hygienist 1 71 Kiran Maccali 25 Vythiri, India Farmer 1 64 Adriana Peluso 21 Salerno Rhythmic gymnastics teacher 1 57 Leone Gucciardini 27 Florence Waiter 1 50 Sofia D'Altrui 23 Pescara Student and receptionist 1 43 Danilo Novelli 22 Bari Bartender 1 38 Mirko D'Arpa 31 Rome Real estate agent 8 37 Valeria Molin Predel 34 Bolzano Student and former ice hockey player 1 36 Filippo Pongiluppi 30 Rimini Hotelier 1 29 Claudia Letizia 32 Pompei Burlesque performer 1 22 Mario Ermito 20 Brindisi Model 1 15

The Invaders On February 13, 2012, Alessia Marcuzzi communicated to viewers that, from that moment on, three former housemates (with the title of "Invaders") would re-enter in the competition with the aim of hindering the path of the current competing housemates towards final victory, namely, Patrick Ray Pugliese (GF4), Cristina Del Basso (GF9) and Ferdinando Giordano (GF10); in fact, they entered the 17th week of this edition.

Initially a "second wave" of "Invaders" was planned for the next episode (i.e. for the 18th week), but then the idea was dropped due to the refusal to participate (due to previous work commitments) of the four former housemates contacted by Endemol Italia. The housemates called to take part in the competition were Roberto Mercandalli (GF 8), the couple made up of Veronica Ciardi and Sarah Nile (GF 10) and George Leonard (GF10).

Nominations table Week 2 - week 15 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Week 11 Week 12 Week 13 Week 14 Week 15 Nominationsreceived Sabrina Not inHouse Exempt AmedeoGiusy Noteligible GiusyAmedeo GaiaAmedeo Claudia Luca Valeria Vito Leone Amedeo AmedeoKiran AmedeoVito Chiara Yassine LucaAmedeo MonicaAmedeo AmedeoValentina Noteligible AmedeoSabrina Franco Not inHouse Exempt AmedeoCaterina Rudolf Amedeo LucaMartina MonicaChiara ChiaraKevin Armando MartinaGiusy Martina Not inHouse ExemptAdriana Gaia Adriana ChiaraKiran FrancoAmedeo Ilenia Yassine MonicaFranco MonicaAmedeo AmedeoGiusy Noteligible GiusyValentina Armando Not inHouse ExemptKiran Gaia Adriana KiranChiara FrancoAmedeo Luca Amedeo AmedeoMonica AmedeoMonica ChiaraGiusy Franco GiusyValentina IleniaSofia Claudia Filippo Kiran Kiran Kiran Kiran KiranChiara AmedeoFranco Gaia Chiara LucaMonica ChiaraMonica ChiaraGiusy NoteligibleValentinaKevin Vito Not inHouse Exempt Sofia Gaia Adriana ChiaraAmedeo AmedeoFranco Rudolf Luca LucaMonica MonicaChiara ChiaraGiusy Franco GiusyValentina Kevin Not inHouse Exempt AmedeoValentina Armando GaetanoValentina Valentina Not inHouse Exempt AmedeoGiusy Noteligible AmedeoFranco FlorianaSofia Sofia Mirko Leone Kiran Leone Amedeo MartinaKiran CaterinaArmando Enrica Martina MartinaFranco FrancoAmedeo AmedeoValentina Noteligible FrancoSabrina Gaetano Not inHouse Exempt AmedeoKevin Armando KevinGiusy Giusy Not inHouse Exempt AmedeoGaetano Noteligible AmedeoFranco Enrica ExemptGaia Mirko Kiran Vito Leone Vito KiranMartina VitoFranco Floriana Martina AmedeoFranco AmedeoFranco AmedeoValentina NoteligibleAmedeoSabrina Fabrizio Not inHouse ExemptAmedeoArmando Yassine Amedeo VitoChiara AmedeoFranco Noteligible Gaetano AmedeoVito Amedeo Sofia Claudia Luca Valeria Adriana Gaia Vito VitoMartina FrancoArmando Rudolf Yassine LucaChiara ChiaraMonica ChiaraKevin Vito GiusyMartina 51 ChiaraMario Claudia Valeria Valeria Vito Leone Vito KiranMartina FrancoCaterina Floriana Luca AmedeoFranco AmedeoFranco AmedeoGaetano Evicted(Day 99) 20 Daniel Not inHouse Exempt Ejected(Day 92)N/A Monica Not inHouse Exempt VitoMartina MartinaVito Evicted(Day 92) 13 RudolfAmedeo Valeria Filippo Valeria Sofia Gaia Amedeo ChiaraAmedeo CaterinaArmando Vito Martina LucaMonica MonicaChiara Walked(Day 92) 0 LucaSofia Gaia Mirko Leone Vito Gaia Adriana KiranVito VitoFranco Armando Vito AmedeoVito Evicted(Day 85) 12 Yassine Not inHouse ExemptVitoAmedeo Fabrizio Amedeo Evicted(Day 78) 3 CaterinaMario Valeria Valeria Valeria Vito Gaia Kiran KiranChiara AmedeoFranco Evicted(Day 71) 5 KiranMario Claudia Valeria Sofia Sofia Gaia Vito ChiaraVito Evicted(Day 64) 18 AdrianaValeria Valeria Valeria Valeria Vito Leone Amedeo Evicted(Day 57) 7 Leone Sofia Claudia Luca Valeria Sofia Gaia Evicted(Day 50) 7 Sofia Mario Claudia Filippo Valeria Vito Evicted(Day 43) 15 DaniloValeria Claudia Luca Valeria Sofia Walked(Day 38) 0 Mirko ExemptClaudia Filippo Valeria Vito Walked(Day 37) 4 Valeria Sofia Kiran Caterina Adriana Evicted(Day 36) 19 FilippoSofia Gaia Mirko Evicted(Day 29) 4 ClaudiaAmedeo Gaia Evicted(Day 22) 9 Mario Sofia Evicted(Day 15) 4 Notes , , , Nominated MarioSofia ClaudiaGaia FilippoLucaMirkoValeria KiranLeoneValeria SofiaVito GaiaLeone AdrianaAmedeoVito ChiaraKiran AmedeoArmandoCaterinaFrancoVito AmedeoMartinaYassine AmedeoLucaMonica AmedeoChiaraMonica AmedeoChiaraGiusy AmedeoFrancoGiusySabrinaValentina Walked none MirkoDanilo none Rudolf none EjectednoneDaniel none EvictedMario59.19%to evictClaudia79.78%to evictFilippo37.19%to evictValeria53.60%to evictSofia59.27%to evictLeone54.35%to evictAdriana55.07%to evictKiran55.24%to evictCaterina41.78%to evictYassine66.30%to evictLuca52.65%to evictMonica38.12%to evictChiara58.76%to evictAmedeo34.34%to evict Survived Sofia40,81% Gaia20,22% Luca25,01%Mirko23,27%Valeria14,53% Leone26.41%Kiran19.99% Vito40.73% Gaia45.65% Amedeo30.98%Vito13.95% Chiara44.76% Vito16.86%Armando15.35%Franco14.04%Amedeo11.97% Martina18.85%Amedeo14.85% Monica40.85%Amedeo6.50% Chiara35.80%Amedeo26.08% Amedeo35.00%Giusy6.24% Valentina31.57%Giusy15.19%Sabrina12.61%Franco6.29%

Week 16 - final Week 16 Week 17 Week 18 Week 19 Week 20 Week 21 Week 22 Week 23 Week 24Final Nominationsreceived SabrinaVito GaiaGaetano Giusy GaiaValentina Nominated Ferdinando ValentinaKevin IleniaGaia Nominated IleniaGaia Nominated IleniaGaia Vito Nominated IleniaFranco Noteligible Patrick Winner(Day 161) 41 GaiaFabrizio SabrinaGaetano Gaetano SabrinaValentina Noteligible Ferdinando SabrinaValentina SabrinaCristina Noteligible SabrinaCristina Noteligible SabrinaPatrick Ilenia Ilenia SabrinaPatrick Noteligible Patrick Runner-Up(Day 161) 20 Patrick Not inHouse Exempt Noteligible ValentinaGaia FlorianaValentina Cristina GaiaVale Nominated GaiaKevin Martina Noteligible IleniaArmando Franco Sabrina Third Place(Day 161) 13 FrancoArmando FabrizioEnrica Martina EnricaValentina Nominated Ferdinando ValentinaMartina FlorianaSabrina Vale SabrinaMartina Nominated SabrinaMartina Armando Patrick IleniaSabrina Noteligible Sabrina Fourth Place(Day 161) 37 MartinaArmando FabrizioValentina Noteligible ValentinaKevin Noteligible Ferdinando ValentinaFranco ValentinaFranco Noteligible ValeSabrina Noteligible FrancoSabrina Ilenia Nominated SabrinaFranco Sabrina Armando Fifth Place(Day 161) 20 ArmandoFranco FabrizioGiusy Franco ValentinaEnrica GiusyFerdinando ValentinaKevin FlorianaValentina Ilenia SabrinaVale SabrinaCristina SabrinaPatrick Ilenia Franco SabrinaPatrick Franco Sabrina Evicted 6 IleniaVito FabrizioEnrica Gaia EnricaValentina Sabrina Ferdinando ValentinaSabrina FlorianaSabrina Noteligible SabrinaVale FrancoPatrick SabrinaPatrick Gaia Armando PatrickFranco Evicted(Day 154) 3 VitoSabrina FabrizioEnrica Sabrina EnricaValentina Valentina Ferdinando ValentinaKevin FlorianaValentina Martina ValeCristina Noteligible KevinPatrick Sabrina Nominated Evicted(Day 147) 26 KevinGaia GaetanoMartina Noteligible ValentinaSabrina Noteligible Ferdinando SabrinaValentina SabrinaCristina Gaia SabrinaCristina Noteligible SabrinaPatrick Evicted(Day 147) 15 Cristina Not inHouse Exempt Noteligible GaiaKevin ValentinaVito Noteligible KevinVito Nominated Evicted(Day 140) 7 Vale Not inHouse Exempt Noteligible MartinaIlenia Evicted(Day 140) 4 ValentinaFabrizio FrancoMartina Nominated MartinaFranco Noteligible Cristina GaetanoSabrina ArmandoSabrina Nominated Evicted(Day 133) 35 FlorianaEnrica FrancoGaetano Enrica FrancoSabrina FrancoPatrick FrancoSabrina CristinaFranco Evicted(Day 133) 5 Ferdinando Not inHouse Exempt Noteligible Nominated MartinaSabrina Evicted(Day 127) 10 GaetanoArmando KevinGiusy Noteligible ValentinaKevin Noteligible Ferdinando ValentinaSabrina Walked(Day 125) 9 GiusyKevin FrancoSabrina Noteligible SabrinaFranco Nominated Ferdinando Evicted(Day 120) 16 EnricaFloriana FrancoGaetano Kevin FrancoSabrina Evicted(Day 120) Patrick Evicted(Day 120) 7 FabrizioGaia FrancoMartina Evicted(Day 113) 5 Amedeo Evicted(Day 106) 51 Notes none , none NominatedFabrizioFrancoGaetano Valentina EnricaFrancoSabrinaValentina FrancoGiusySabrina FerdinandoKevinSabrinaValentina FlorianaSabrinaValentina SabrinaValentina SabrinaVale CristinaFrancoPatrickSabrina GaiaKevinPatrickSabrina MartinaSabrinaVito FrancoIleniaPatrickSabrina ArmandoPatrickSabrina FrancoGaiaMartinaPatrickSabrina Walkednone Gaetano noneEvictedFabrizio54.47%to evict Valentina75.69%to save Enrica71.08%to evict Giusy12.11%to save Ferdinando39.94%to evict Floriana74.17%to evict Valentina58.37%to evict Vale65.08%to evict Cristina4.89%to save Kevin42.12%to evict Vito31.95%to save Ilenia53.12%to evict Armando47.59%to evict Martina2.18%Franco5.10%Patrick14.96% Gaia24.37% SurvivedFranco36.06%Gaetano9.47% Valentina24.31%to evict Franco17.96%Valentina5.57%Sabrina5.39% Franco25.57%Sabrina62.32% Sabrina35.17%Kevin13.82%Valentina11.07% Sabrina19.09%Valentina6.74% Sabrina41.63% Sabrina34.92% Franco13.93%Patrick14.03%Sabrina67.15% Gaia27.71%Sabrina20.29%Patrick9.89% Martina32.45%Sabrina35.60% Sabrina38.31%Franco7.39%Patrick1.18% Sabrina33.86%Patrick18.55% Sabrina75.63%to win

Notes The public voted for their favourite housemate. Adriana, Danilo and Kiran were the favourite housemates. The producers decided that only Amedeo, Mario, Leone, Sofia and Valeria could be nominated that week. The producers decided that only Claudia, Gaia, Kiran, Sofia and Valeria could be nominated that week. This week the producers decided that every housemate could be nominated. The producers decided that only Adriana, Kiran, Leone, Sofia and Valeria could be nominated that week. Armando, Martina and Vito were immune as they were new housemates.