2012 Aegon Championships – Singles

Marin Čilić won the singles tennis title at the 2012 Queen's Club Championships with the score at 6–7(3–7), 4–3, after David Nalbandian was defaulted from the tournament for kicking an advertising board, resulting in a cut leg for a line judge.

Andy Murray was the defending champion, but lost in the second round to Nicolas Mahut.

Seeds
The top eight seeds receive a bye into the second round. • # 🇬🇧 Andy Murray (second round)

• # 🇫🇷 Jo-Wilfried Tsonga (third round)

• # 🇷🇸 Janko Tipsarević (third round)

• # 🇫🇷 Gilles Simon (second round)

• # 🇪🇸 Feliciano López (third round)

• # Marin Čilić (champion)

• # 🇺🇸 Andy Roddick (second round)

• # 🇫🇷 Julien Benneteau (third round)

• # Kevin Anderson (quarterfinals)

• # 🇦🇷 David Nalbandian (final, disqualified)

• # 🇨🇾 Marcos Baghdatis (second round)

• # 🇺🇿 Denis Istomin (second round)

• # 🇷🇺 Alex Bogomolov Jr.(second round)

• # 🇱🇺 Gilles Müller (second round)

• # 🇯🇵 Go Soeda (second round)

• # Ivo Karlović (second round)

Seeds
• # 🇺🇸 Ryan Sweeting (qualifying competition, lucky loser)

• # 🇧🇪 Ruben Bemelmans (qualified)

• # 🇺🇸 Bobby Reynolds (qualified)

• # 🇺🇸 Brian Baker (second round)

• # 🇮🇱 Amir Weintraub (qualifying competition)

• # 🇫🇷 Kenny de Schepper (qualified)

• # 🇺🇦 Sergei Bubka (qualifying competition)

• # 🇺🇸 Denis Kudla (second round)

Qualifiers
• # 🇫🇷 Kenny de Schepper

• # 🇧🇪 Ruben Bemelmans

• # 🇺🇸 Bobby Reynolds

• # 🇰🇿 Evgeny Korolev

Lucky loser

 * 1) 🇺🇸 Ryan Sweeting