1993 Japan Open Tennis Championships – Men's singles

Jim Courier was the defending champion, but lost in the third round to Jonathan Stark.

Pete Sampras won the title by defeating Brad Gilbert 6–2, 6–2, 6–2 in the final. By doing so, Sampras clinches the World No. 1 spot for the first time in his career.

Seeds
The first eight seeds received a bye to the second round. • # 🇺🇸 Jim Courier (third round)

• # 🇺🇸 Pete Sampras (champion)

• # 🇺🇸 Michael Chang (second round)

• # 🇷🇺 Alexander Volkov (third round)

• # 🇸🇪 Henrik Holm (semifinals)

• # 🇦🇺 Wally Masur (semifinals)

• # 🇺🇸 Brad Gilbert (final)

• # 🇮🇱 Amos Mansdorf (third round)

• # 🇳🇿 Brett Steven (second round)

• # 🇺🇸 David Wheaton (quarterfinals)

• # Jan Siemerink (third round)

• # Kenneth Carlsen (second round)

• # 🇸🇪 Christian Bergström (third round)

• # 🇺🇸 Jim Grabb (first round)

• # 🇫🇷 Guillaume Raoux (third round)

• # 🇷🇺 Andrei Cherkasov (second round)