1994 Japan Open Tennis Championships – Men's singles

First-seeded Pete Sampras was the defending champion, and won the title again defeating Michael Chang in the final 6–4, 6–2.

Seeds
The top eight seeds received a bye into the second round. • # 🇺🇸 Pete Sampras (champion)

• # 🇺🇸 Michael Chang (final)

• # 🇩🇪 Boris Becker (semifinals)

• # 🇺🇸 Ivan Lendl (quarterfinals)

• # 🇺🇸 Aaron Krickstein (third round)

• # 🇺🇸 Brad Gilbert (quarterfinals)

• # 🇦🇺 Patrick Rafter (quarterfinals)

• # 🇮🇱 Amos Mansdorf (second round)

• # 🇺🇸 Jonathan Stark (third round)

• # 🇺🇸 Patrick McEnroe (third round)

• # 🇸🇪 Henrik Holm (semifinals)

• # 🇨🇿 Daniel Vacek (third round)

• # 🇨🇦 Greg Rusedski (second round)

• # 🇦🇺 Jamie Morgan (first round)

• # 🇦🇷 Javier Frana (first round)

• # Byron Black (first round)