2013 Aegon International – Men's singles

Andy Roddick was the defending champion, but he retired from professional tennis in September 2012. Feliciano López won the title beating in the final Gilles Simon, 7–6(7–2), 6–7(5–7), 6–0 for the third title of his career, first since 2010.

Seeds
The top four seeds receive a bye into the second round. • # 🇨🇦 Milos Raonic (second round)

• # 🇫🇷 Gilles Simon (final)

• # 🇩🇪 Philipp Kohlschreiber (second round)

• # 🇦🇷 Juan Mónaco (second round)

• # Kevin Anderson (first round)

• # 🇺🇦 Alexandr Dolgopolov (first round)

• # 🇮🇹 Andreas Seppi (semifinals)

• # 🇮🇹 Fabio Fognini (quarterfinals)

Seeds
• # 🇦🇷 Guido Pella (first round)

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

• # 🇺🇸 Ryan Harrison (qualified)

• # 🇫🇷 Kenny de Schepper (qualified)

• # 🇫🇷 Guillaume Rufin (qualified)

• # 🇺🇸 James Blake (qualified)

• # 🇺🇸 Michael Russell (qualifying competition)

• # 🇦🇷 Martín Alund (qualifying competition)

Qualifiers
• # 🇺🇸 James Blake

• # 🇫🇷 Guillaume Rufin

• # 🇺🇸 Ryan Harrison

• # 🇫🇷 Kenny de Schepper