The 2012 Apia International Sydney was a joint ATP and WTA tennis tournament, that was played on outdoor hard courts. It was the 120th edition of the Apia International Sydney and was a part of the ATP World Tour 250 series of the 2012 ATP World Tour, and of the WTA Premier tournaments of the 2012 WTA Tour. Both the men's and the women's events took place at the NSW Tennis Centre in Sydney, Australia, from 8 to 15 January 2012. Due to rain, the men's singles and doubles finals had to be rescheduled from the evening of 14 January to the morning of 15 January, the day before the Australian Open was due to begin.[1] Jarkko Nieminen and Victoria Azarenka won the singles titles.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Argentina | Juan Martín del Potro[2] | 11 | 1 | |
| John Isner | 18 | 2 | ||
 France | Richard Gasquet | 19 | 3 | |
 Spain | Feliciano López | 20 | 4 | |
 Serbia | Viktor Troicki | 22 | 5 | |
| Florian Mayer | 23 | 6 | ||
| Spain | Marcel Granollers | 27 | 7 | |
 Czech Republic | Radek Štěpánek | 28 | 8 | |
 Russian Federation | Alex Bogomolov Jr. | 34 | 9 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry from a lucky loser spot:
| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Bob Bryan | Mike Bryan | 2 | 1 | |||
| Max Mirnyi | Daniel Nestor | 6 | 2 | |||
 Poland | Mariusz Fyrstenberg | Marcin Matkowski | 28 | 3 | ||
 Sweden | Robert Lindstedt | Horia Tecău | 28 | 4 |
The following pairs received wildcards into the doubles main draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Caroline Wozniacki[5] | 1 | 1 | ||
| Czech Republic | Petra Kvitová[6] | 2 | 2 | |
 Belarus | Victoria Azarenka | 3 | 3 | |
 China | 5 | 4 | ||
 Australia | 6 | 5 | ||
| Russian Federation | Vera Zvonareva | 7 | 6 | |
| Poland | Agnieszka Radwańska | 8 | 7 | |
| France | Marion Bartoli | 9 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Sofia Arvidsson
Melinda Czink Ekaterina Makarova Urszula RadwańskaThe following players received entry from a lucky loser spot:
Flavia Pennetta (back injury) Svetlana Kuznetsova (heat illness)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Czech Republic | Květa Peschke | Katarina Srebotnik | 4 | 1 | ||
| Liezel Huber | Lisa Raymond | 5 | 2 | |||
| Argentina | Gisela Dulko | Flavia Pennetta | 17 | 3 | ||
| Russian Federation | Maria Kirilenko | Nadia Petrova | 20 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pairs received entry as alternates:
Agnieszka RadwańskaSee main article: 2012 Apia International Sydney – Men's singles. 
Jarkko Nieminen defeated Julien Benneteau, 6–2, 7–5
See main article: 2012 Apia International Sydney – Women's singles. Victoria Azarenka defeated Li Na, 6–2, 1–6, 6–3
See main article: 2012 Apia International Sydney – Men's doubles. 
Bob Bryan / Mike Bryan defeated Matthew Ebden / Jarkko Nieminen, 6–1, 6–4
See main article: 2012 Apia International Sydney – Women's doubles. Květa Peschke / 
Katarina Srebotnik defeated Liezel Huber / Lisa Raymond, 6–1, 4–6, [13–11]
