The 2012 Aegon Trophy was a professional tennis tournament played on grass courts. It was the fourth edition of the tournament which was part of the 2012 ATP Challenger Tour and the 2012 ITF Women's Circuit. It took place in Nottingham, Great Britain between 4 and 10 June 2012.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Japan | Go Soeda | 58 | 1 | |
 Slovakia | Lukáš Lacko | 64 | 2 | |
| Japan | Tatsuma Ito | 68 | 3 | |
 Russian Federation | Dmitry Tursunov | 88 | 4 | |
 Australia | Marinko Matosevic | 90 | 5 | |
| Russian Federation | Igor Kunitsyn | 101 | 6 | |
 Canada | Vasek Pospisil | 102 | 7 | |
 Estonia | Jürgen Zopp | 103 | 8 |
The following players received wildcards into the singles main draw:
Jamie Baker Andrew Fitzpatrick Oliver Golding Josh GoodallThe following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Austria | Tamira Paszek | 52 | 1 | |
| Hsieh Su-wei | 64 | 2 | ||
| United Kingdom | Elena Baltacha | 68 | 3 | |
| Eleni Daniilidou | 69 | 4 | ||
 Georgia | Anna Tatishvili | 75 | 5 | |
| Japan | Kimiko Date-Krumm | 76 | 6 | |
 Poland | Urszula Radwańska | 79 | 7 | |
| United Kingdom | Anne Keothavong | 81 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2012 Aegon Trophy – Men's singles.
Dmitry Tursunov, 4–6, 6–1, 6–4See main article: 2012 Aegon Trophy – Men's doubles.
Dominic Inglot def. Jonathan Marray / Frederik Nielsen, 6–4, 6–7(9–11), [10–8]See main article: 2012 Aegon Trophy – Women's singles.
Urszula Radwańska def. 
CoCo Vandeweghe, 6–1, 4–6, 6–1See main article: 2012 Aegon Trophy – Women's doubles.
Casey Dellacqua def. Laura Robson / Heather Watson, 6–4, 6–2
