Japan at The 1984 Summer Olympics - Athletics

Athletics

Men's 400 metres

• Susumu Takana

• Heat — 46.26
• Quarterfinals — 45.91
• Semifinals — 45.88 (→ did not advance)

Men's 10,000 metres

• Yutaka Kanai

• Qualifying Heat — 28:14.67
• Final — 28:27.06 (→ 7th place)

• Masanari Shintaku

• Qualifying Heat — 28:24.30
• Final — 28:55.54 (→ 16th place)

Men's Marathon

• Takeshi So

• Final — 2:10:55 (→ 4th place)

• Toshihiko Seko

• Final — 2:14:13 (→ 14th place)

• Shigeru So

• Final — 2:14:38 (→ 17th place)

Men's Long Jump

• Junichi Usui

• Qualification — 8.02m
• Final — 7.87m (→ 7th place)

Men's High Jump

• Takao Sakamoto

• Qualification — 2.21m (→ did not advance)

Men's Javelin Throw

• Masami Yoshida

• Qualification — 81.42m
• Final — 81.98m (→ 5th place)

• Kazuhiro Mizoguchi

• Qualification — 74.82m (→ did not advance, 20th place)

Men's Hammer Throw

• Shigenobu Murofushi

• Qualification — 70.92m (→ did not advance)

Men's Pole Vault

• Tomomi Takahashi

• Qualifying Round — 5.30m
• Final — no mark (→ no ranking)

Women's Marathon

• Nanae Sasaki

• Final — 2:37:04 (→ 19th place)

• Akemi Masuda

• Final — did not finish (→ no ranking)

Women's High Jump

• Hisayo Fukumitsu

• Qualification — 1.87m (→ did not advance, 17th place)

• Megumi Sato

• Qualification — 1.84m (→ did not advance, 18th place)

Women's Javelin Throw

• Emi Matsui

• Qualification — 57.72m (→ did not advance)

• Minori Mori

• Qualification — 56.60m (→ did not advance)