1983 Japan Open Tennis Championships – Men's singles

Jimmy Arias was the defending champion, but did not participate this year.

Eliot Teltscher won the title, defeating Andrés Gómez in the final, 7–5, 3–6, 6–1.

Seeds
• # 🇪🇨 Andrés Gómez (final)

• # 🇺🇸 Eliot Teltscher (champion)

• # 🇫🇷 Henri Leconte (third round)

• # 🇺🇸 Robert Van't Hof (second round)

• # 🇮🇹 Gianni Ocleppo (quarterfinals)

• # 🇸🇪 Thomas Högstedt (second round)

• # 🇺🇸 Scott Davis (second round)

• # 🇫🇷 Christophe Roger-Vasselin (quarterfinals)

• # 🇺🇸 Sammy Giammalva Jr. (second round)

• # 🇺🇸 Mike De Palmer (third round)

• # 🇺🇸 Brad Gilbert (third round)

• # Francisco González (first round)

• # 🇺🇸 Pat DuPré (first round)

• # 🇺🇸 Tom Gullikson (semifinals)

• # 🇫🇷 Thierry Tulasne (first round)

• # Nduka Odizor (first round)