2012 Aegon Trophy – Men's singles

Gilles Müller was the defending champion, but chose not to participate. Benjamin Becker defeated Dmitry Tursunov 4–6, 6–1, 6–4 in the final to win the title.

Seeds
• # 🇯🇵 Go Soeda (first round)

• # 🇸🇰 Lukáš Lacko (quarterfinals)

• # 🇯🇵 Tatsuma Ito (first round)

• # 🇷🇺 Dmitry Tursunov (final)

• # 🇦🇺 Marinko Matosevic (semifinals)

• # 🇷🇺 Igor Kunitsyn (quarterfinals)

• # 🇨🇦 Vasek Pospisil (second round)

• # 🇪🇪 Jürgen Zopp (quarterfinals)