The 2013 Portugal Open was a tennis tournament played on outdoor clay courts. It was the 24th edition of the Portugal Open for the men and the 17th for the women, and was part of the ATP World Tour 250 series of the 2013 ATP World Tour, and of the International-level tournaments of the 2013 WTA Tour. Both the men's and the women's events took place at the Estádio Nacional in Oeiras, Portugal, from April 29 through May 5, 2013. Formerly named Estoril Open, the organization of the tournament changed its name to "Portugal Open" in order to recognize Portugal's success in organizing international events.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | David Ferrer | 4 | 1 | |
| Stanislas Wawrinka | 17 | 2 | ||
 Italy | Andreas Seppi | 18 | 3 | |
| Italy | Fabio Fognini | 24 | 4 | |
 France | Julien Benneteau | 32 | 5 | |
| France | Benoît Paire | 33 | 6 | |
 Argentina | Horacio Zeballos | 40 | 7 | |
| Spain | Tommy Robredo | 43 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Gilles Müller (left shoulder injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Pakistan | Aisam-ul-Haq Qureshi | Jean-Julien Rojer | 15 | 1 | ||
| Spain | David Marrero |  Brazil | Marcelo Melo | 44 | 2 | |
 Mexico | Santiago González |  United States | Scott Lipsky | 62 | 3 | |
| Italy | Daniele Bracciali | Italy | Fabio Fognini | 64 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Gilles Müller (left shoulder injury)| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| France | Marion Bartoli | 14 | 1 | |
 Slovakia | Dominika Cibulková | 15 | 2 | |
 Russian Federation | Anastasia Pavlyuchenkova | 19 | 3 | |
| Spain | Carla Suárez Navarro | 23 | 4 | |
 Romania | Sorana Cîrstea | 26 | 5 | |
| United States | Varvara Lepchenko | 27 | 6 | |
| Russian Federation | Elena Vesnina | 29 | 7 | |
| Julia Görges | 30 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Irina-Camelia Begu (right shoulder injury) Alizé Cornet (shoulder injury)
Yaroslava Shvedova Roberta Vinci (shoulder injury)
Heather Watson (mononucleosis)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| United States | Raquel Kops-Jones | United States | Abigail Spears | 29 | 1 | |
| Chan Hao-ching | France | Kristina Mladenovic | 73 | 2 | ||
| Natalie Grandin |  Czech Republic | Vladimíra Uhlířová | 73 | 3 | ||
| Darija Jurak |  Hungary | Katalin Marosi | 79 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2013 Portugal Open – Men's singles.
David Ferrer 6–1, 6–4See main article: 2013 Portugal Open – Women's singles.
Anastasia Pavlyuchenkova defeated Carla Suárez Navarro 7–5, 6–2See main article: 2013 Portugal Open – Men's doubles.
Santiago González / Scott Lipsky defeated Aisam-ul-Haq Qureshi / Jean-Julien Rojer, 6–3, 4–6, [10–7]See main article: 2013 Portugal Open – Women's doubles.
Kristina Mladenovic defeated Darija Jurak / Katalin Marosi, 7–6(7–3), 6–2
