The fifteenth season started airing on 18 September 2014 on Telecinco with Mercedes Mila hosting the main "Galas" and Jordi González hosting the "El Debate", a weekly spin-off show airing on Sunday nights.

17 housemates and a goat called Rubia entered the first day at the GH house.

Alejandra González (born January 2, 1994) is a 20 year old flight assistant and waitress from Albacete.

She declared that she never wanted to be on Big Brother: she did the screening test because it was Yolanda's dream.

He entered alone on Day 1 but he joined Omar and Vitín creating the first trio of the season.

On week 5, her boyfriend threw balls of tennis to the garden with messages of love and warning her that Fran was hypocrite.

In Day 85 she received 8,3 % of the positive votes and did not manage to remain in the house until the end.

On week 5, Azahara's boyfriend threw tennis balls to the garden with messages warning her that Fran was a hypocrite.

He never was nominated, and in Day 85 he received the 6,8% of the positive votes and did not manage to remain in the house until the end.

Jonathan Pérez (born December 29, 1988) is a 25 years old sport instructor from Valencia.

In Day 85 she received 5,3 % of the positive votes and did not manage to remain in the house until the end, leaving Yolanda very sad.

José Casacuberta is a 24 years old seller from Mexico although he is living in Barcelona for 4 months.

He left the house voluntarily on Day 8 because he didn't feel integrated into the group.

Juan Manuel Fario (Juanma) (born September 26, 1982) is a 31 years old surf instructor from Valencia.

Lucía Parreño (born February 10, 1991) is a 23 years shop assistant from Madrid.

Luís de Ramírez (born February 22, 1991) is a 23 years old bullfighter from Málaga.

He was the tenth housemate to be evicted with 52.1% of the votes on Day 78 leaving Paula very sad.

Mayca Pozo (born September 18, 1977) is a 36 years old unemployed housekeeper from Cordoba.

Paula González (born September 23, 1994) is a 19 years old shop assistant from Barcelona.

She had problems with many people of the house specially with Alejandra, Omar and Lucía, and she always was nominated and exposed because she didn't have partner.

Shaima Al-Lal Ahmed (born November 18, 1995) is an 18 years old student from Ceuta.

Víctor Aguado (Vitín) (born November 21, 1984) is a 29 years old Telecom Tech from Madrid.

He was the seventh housemate to be evicted with 66% of the votes on his first nomination because of Omar did, leaving Alejandra very sad.

Yolanda Claramonte (born August 31, 1992) is a 22 years old public relation from Albacete.

On the launch it was revealed that the promos had a second part which was never aired and ruled that you could sign up with someone but you can't choose your partner.

On the launch of Gran Hermano 15, 7 pairs, 1 trio and a single housemate entered the house.

If the partner of a couple is evicted or leave the house, the remaining housemate would be nominated individually.

Then each nominated pair must choose which member of the couple must finally face eviction.