The 2012 Estoril Open was a tennis tournament played on outdoor clay courts. It was the 23rd edition of the Estoril Open for the men (the 16th for the women), and was part of the ATP World Tour 250 series of the 2012 ATP World Tour, and of the International-level tournaments of the 2012 WTA Tour. Both the men's and the women's events took place at the Estádio Nacional in Oeiras, Portugal, from 28 April through 6 May 2012.
ATP singles main-draw entrants
Seeds
Seedings are based on the rankings of April 23, 2012
Other entrants
The following players received wildcards into the main draw: Gastão Elias João Sousa Pedro Sousa
The following players received entry as a special exempt into the main draw: Attila Balázs
The following players received entry from the qualifying draw: Íñigo Cervantes Javier Martí Daniel Muñoz de la Nava Iván Navarro
Withdrawals
Carlos Berlocq
Juan Ignacio Chela
Gaël Monfils
Retirements
Denis Istomin
ATP doubles main-draw entrants
Seeds
Rankings are as of April 23, 2012
Other entrants
The following pairs received wildcards into the doubles main draw: Gastão Elias / João Sousa Frederico Gil / Pedro Sousa
WTA singles main-draw entrants
Seeds
Seedings are based on the rankings of April 23, 2012
Other entrants
The following players received wildcards into the main draw: Nina Bratchikova Maria João Koehler Bárbara Luz
The following players received entry from the qualifying draw: Kristina Barrois Karin Knapp María Teresa Torró Flor Heather Watson
The following player received entry as lucky loser: Sloane Stephens
Withdrawals
Mona Barthel (left foot injury)
Retirements
Jarmila Gajdošová (left ankle injury) Polona Hercog (right foot injury)
WTA doubles main-draw entrants
Seeds
1 Rankings are as of April 23, 2012
Other entrants
The following pairs received wildcards into the doubles main draw: Ekaterina Ivanova / Maria João Koehler Margarida Moura / Joana Valle Costa The following pairs received entry as alternates: Estrella Cabeza Candela / Bárbara Luz
Withdrawals
Maria Kirilenko (right ankle injury)
Retirements
Jarmila Gajdošová (left ankle injury)
Finals
Men's singles
Juan Martín del Potro defeated Richard Gasquet, 6–4, 6–2
It was del Potro's 2nd title of the year and 11th of his career. It was his 2nd win at Estoril, defending his title.
Women's singles
Kaia Kanepi defeated Carla Suárez Navarro, 3–6, 7–6(8–6), 6–4
It was Kanepi's 2nd title of the year and 3rd of her career.
Men's doubles
Aisam-ul-Haq Qureshi / Jean-Julien Rojer defeated Julian Knowle / David Marrero, 7–5, 7–5
Women's doubles
Chuang Chia-jung / Zhang Shuai defeated Yaroslava Shvedova / Galina Voskoboeva, 4–6, 6–1, [11–9]