Eva Birnerová and Jarmila Gajdošová are the defending champions but only Eva Birnerová participated this year.
Mariana Duque Mariño was the defending champion, but she lost to Han Xinyun in the first round.
7th seed Lourdes Domínguez Lino defeated Mathilde Johansson 2–6, 6–3, 6–2 in the final.
Gisela Dulko and Edina Gallovits-Hall were the defending champions, but Dulko decided to not participate.
As a result, Gallovits-Hall played with Anabel Medina Garrigues and they won this tournament, by defeating Sharon Fichman and Laura Pous Tió 2–6, 7–6(6), [11–9].
Edina Gallovits-Hall and Polona Hercog were the defending champions. However, they chose not to compete this year.
In the final, 4th seeded Irina-Camelia Begu and Elena Bogdan defeated the unseeded Ekaterina Ivanova and Kathrin Wörle.
Sharon Fichman and Julia Görges were the defending champions, but both chose not to participate.
Timea Bacsinszky and Tathiana Garbin were the defending champions but decided not to participate.
Lucie Hradecká and Anabel Medina Garrigues were the defending champions, but Garrigues chose to participate in the 2011 Internazionali Femminili di Palermo.
Irina-Camelia Begu was the defending champion, but decided not to participate this year.
Victoria Azarenka defeated Maria Sharapova in the final, 6–2, 6–3 to win the women's singles tennis title at the 2012 Indian Wells Masters.
Agnieszka Radwańska defeated Maria Sharapova in the final, 7–5, 6–4 to win the women's singles tennis title at the 2012 Miami Open. It was her second Premier Mandatory title and first Miami Masters title. Radwańska did not drop a set during the tournament.
Claire de Gubernatis was the defending champion, but chose not to participate.
Anabel Medina Garrigues and Alicja Rosolska were the defending champions but Medina Garrigues decided to participate at the Estoril Open instead.
Rosolska partnered up with Akgul Amanmuradova, but they lost in the first round to Katalin Marosi and Anna Tatishvili.
Janette Husárová and Magdaléna Rybáriková won the final over Eva Birnerová and Michaëlla Krajicek 6–4, 6–2.
Anastasia Pivovarova was the defending champion, but chose not to participate.
Andrea Petkovic was the defending champion, but did not participate because of an ankle injury.
Mariya Koryttseva and Tatiana Poutchek were the defending champions but decided not to participate.
Irina Buryachok and Valeria Solovyeva won the final 6–3, 6–2 against Eva Birnerová and Alberta Brianti.
Eleni Daniilidou and Vitalia Diatchenko were the defending champions, but decided not to defend their title together. Daniilidou played with Eva Birnerová, but lost in the first round to Lyudmyla Kichenok and Nadiya Kichenok.
Diatchenko played alongside Akgul Amanmuradova, losing in the semifinals to Paula Kania and Polina Pekhova.
They eventually won the title Anna Chakvetadze and Vesna Dolonc retired in the final after losing the first set 2–6.
Eva Birnerová and Alexandra Panova were the defending champions, but they lost in the final to Tímea Babos and Mandy Minella, 4–6, 3–6.
Players and pairs who neither have high enough rankings nor receive wild cards may participate in a qualifying tournament held one week before the annual Wimbledon Tennis Championships.
Lisa McShea and Milagros Sequera were the defending champions, but Sequera did not compete this year. McShea teamed up with Jennifer Russell and lost in first round to Lilia Osterloh and Antonella Serra Zanetti.
Eva Birnerová 
Alexandra Panova 
Mandy Minella 
Stefanie Vögele 
