2007 AIG Japan Open Tennis Championships – Men's singles

Roger Federer was the defending champion, but chose not to participate in the 2007 event.

First-seeded David Ferrer beat Richard Gasquet in the final 6–1, 6–2.

Seeds
All seeds receive a bye into the second round. • # 🇪🇸 David Ferrer (champion)

• # 🇨🇿 Tomáš Berdych (semifinals)

• # 🇫🇷 Richard Gasquet (final)

• # 🇦🇺 Lleyton Hewitt (quarterfinals)

• # 🇫🇮 Jarkko Nieminen (second round)

• # 🇷🇺 Dmitry Tursunov (third round)

• # Ivo Karlović (semifinals)

• # 🇪🇸 Fernando Verdasco (quarterfinals)

• # 🇰🇷 Hyung-taik Lee (third round)

• # 🇪🇸 Feliciano López (quarterfinals)

• # 🇦🇷 Juan Martín del Potro (second round, retired due to a leg injury)

• # 🇸🇪 Thomas Johansson (third round)

• # 🇺🇸 Sam Querrey (second round)

• # 🇦🇷 Sergio Roitman (second round)

• # 🇨🇦 Frank Dancevic (second round)

• # 🇺🇸 Michael Russell (third round)