The 2012 Heineken Open was a men's tennis tournament played on outdoor hard courts. It was the 37th edition of the Heineken Open, and was part of the ATP World Tour 250 series of the 2012 ATP World Tour. It took place at the ASB Tennis Centre in Auckland, New Zealand, from 9 January to 14 January 2012. First-seeded David Ferrer won the singles title, his 3rd win at the event after 2007 and 2011.
See main article: 2012 Heineken Open – Singles. 
David Ferrer defeated 
Olivier Rochus, 6–3, 6–4
See main article: 2012 Heineken Open – Doubles. 
Oliver Marach / Alexander Peya defeated 
František Čermák / 
Filip Polášek, 6–3, 6–2
| Country | Player | Rank | Seed | |
|---|---|---|---|---|
| Spain | David Ferrer | 5 | 1 | |
| Spain | Nicolás Almagro | 10 | 2 | |
| Spain | 24 | 3 | ||
 Argentina | Juan Ignacio Chela | 29 | 4 | |
| Kevin Anderson | 32 | 5 | ||
 Brazil | Thomaz Bellucci | 37 | 6 | |
| Donald Young | 39 | 7 | ||
| Philipp Kohlschreiber | 43 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw through qualifying:
Filippo Volandri (finger injury)
