| Date: | 11–17 June |
| Edition: | 110th |
| Prize Money: | €625,300 |
| Draw: | 56S / 24D |
| Category: | World Tour 250 |
| Surface: | Grass |
| Location: | London, United Kingdom |
| Champs: | Marin Čilić[1] |
| Champd: |  Max Mirnyi /  Daniel Nestor[2] |
| Main Name: | Queen's Club Championships |
The 2012 Aegon Championships (also known traditionally as the Queen's Club Championships) was a men's tennis tournament played on outdoor grass courts. It was the 110th edition of the Queen's Club Championships and was part of the ATP World Tour 250 series of the 2012 ATP World Tour. It took place at the Queen's Club in London, United Kingdom, in the club's 126th year between 11 and 17 June.
Marin Čilić won the tournament after his opponent in the final, David Nalbandian was disqualified for kicking a lines official.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 United Kingdom | Andy Murray[3] | 4 | 1 | |
 France | Jo-Wilfried Tsonga | 5 | 2 | |
 Serbia | Janko Tipsarević | 8 | 3 | |
| France | Gilles Simon | 12 | 4 | |
 Spain | Feliciano López | 17 | 5 | |
| Marin Čilić | 24 | 6 | ||
| Andy Roddick | 30 | 7 | ||
| France | Julien Benneteau | 32 | 8 | |
| Kevin Anderson | 34 | 9 | ||
 Argentina | David Nalbandian | 40 | 10 | |
 Cyprus | Marcos Baghdatis | 42 | 11 | |
 Uzbekistan | Denis Istomin | 43 | 12 | |
 Russian Federation | Alex Bogomolov, Jr. | 46 | 13 | |
 Luxembourg | Gilles Müller | 54 | 14 | |
 Japan | Go Soeda | 58 | 15 | |
| Ivo Karlović | 59 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received a Lucky Loser spot:
| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Max Mirnyi | Daniel Nestor | 2 | 1 | |||
| Bob Bryan | Mike Bryan | 6 | 2 | |||
 Poland | Mariusz Fyrstenberg | Radek Štěpánek | 16 | 3 | ||
| Robert Lindstedt | Horia Tecău | 21 | 4 | |||
 India | Mahesh Bhupathi | Rohan Bopanna | 25 | 5 | ||
| United Kingdom | Colin Fleming | Ross Hutchins | 55 | 6 | ||
| Serbia | Janko Tipsarević | Nenad Zimonjić | 56 | 7 | ||
| Eric Butorac | Paul Hanley | 72 | 8 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Leonardo Mayer (family emergency)See main article: 2012 Aegon Championships – Singles.
David Nalbandian 6–7(3–7), 4–3 def.See main article: 2012 Aegon Championships – Doubles.
Max Mirnyi / Daniel Nestor defeated 
Bob Bryan / Mike Bryan, 6–3, 6–4
