Japan at the 1984 Summer Olympics

In their third Olympic archery competition, Japan won a bronze medal in the men's division as well as having a fourth place competitor in each division. '''Women's Individual Competition''': • Hiroko Ishizu – 2525 points (4th place) • Minako Hokari – 2481 points (10th place) '''Men's Individual Competition''': • Hiroshi Yamamoto – 2563 points (Bronze Medal) • Takayoshi Matsushita – 2552 points (4th place) • Ichiro Shimamura – 2312 points (52nd place) ==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) ==Boxing==

'''Men's Light Flyweight (– 48 kg)''' • Mamoru Kuroiwa • First Round — Bye • Second Round — Defeated Francisco Tejedor (COL), 4:1 • Quarterfinals — Lost to Keith Mwila (KEN), 0:5 '''Men's Bantamweight (– 54 kg)''' • Hiroaki Takami • First Round — Bye • Second Round — Defeated Gamaleldin El-Koumy (EGY), 4:1 • Third Round — Lost to Dale Walters (CAN), 0:5 ==Canoeing==

Nine cyclists, eight men and one woman, represented Japan in 1984. Tsutomu Sakamoto won a bronze medal in the sprint event. ;Men's individual road race • Matsuyoshi Takahashi — 45th place ;Sprint • Tsutomu Sakamoto • Katsuo Nakatake ;1000m time trial • Tsutomu Sakamoto ;Team pursuit • Akio Kuwazawa • Harumitsu Okada • Mitsugi Sarudate • Yoshihiro Tsumuraya ;Points race • Akio Kuwazawa • Hitoshi Sato ;Women's individual road race • Wakako Abe — 40th place ==Diving==

'''Men's 3m Springboard''' • Isao Yamagishi :* Preliminary Round — 427.14 (→ did not advance, 25th place) ==Equestrianism==

Nine fencers, five men and four women, represented Japan in 1984. ;Men's foil • Kenichi Umezawa • Nobuyuki Azuma • Tadashi Shimokawa ;Men's team foil • Nobuyuki Azuma, Yoshihiko Kanatsu, Hidehachi Koyasu, Tadashi Shimokawa, Kenichi Umezawa ;Women's foil • Azusa Oikawa • Mieko Miyahara • Miyuki Maekawa ;Women's team foil • Mieko Miyahara, Azusa Oikawa, Miyuki Maekawa, Tomoko Oka ==Gymnastics==

;Men's Team Competition • Preliminary Round (Group A) :*Lost to Yugoslavia (15:32) :*Lost to Romania (22:28) :*Lost to Iceland (17:21) :*Lost to Switzerland (13:20) :*Defeated Algeria (17:16) • Classification Match :*9th/10th place: Lost to United States (16:24) → 10th place • Team Roster :*Seimei Gamo :*Takashi Ikenoue :*Yasou Ikona :*Hidetada Ito :*Koji Matsui :*Mitsuaki Nakamoto :*Kiyoshi Nishiyama :*Takahiro Ohata :*Nobuo Sasaki :*Kenzo Seki :*Yoshihiro Shiga :*Katsutoshi Taguchi :*Seiichi Takamura :*Yukihiko Uemura :*Shinji Yamamoto ==Judo==

Three male pentathletes represented Japan in 1984. ;Individual • Shoji Uchida • Hiroyuki Kawazoe • Daizou Araki ;Team • Shoji Uchida • Hiroyuki Kawazoe • Daizou Araki ==Rhythmic gymnastics==

;Men ;Women ;Open ==Swimming==

'''Men's 100m Freestyle''' • Shigeo Ogata :* Heat — 52.96 (→ did not advance, 33rd place) • Satoshi Sumida :* Heat — 53.83 (→ did not advance, 39th place) '''Men's 200m Freestyle''' • Hiroshi Sakamoto :* Heat — 1:54.71 (→ did not advance, 26th place) • Shigeo Ogata :* Heat — 1:55.97 (→ did not advance, 33rd place) '''Men's 400m Freestyle''' • Shigeo Ogata :* Heat — 4:02.97 (→ did not advance, 22nd place) • Keisuke Okuno :* Heat — 4:06.31 (→ did not advance, 27th place) '''Men's 100m Backstroke''' • Daichi Suzuki :* Heat — 58.37 :* B-Final — 58.30 (→ 11th place) '''Men's 200m Backstroke''' • Daichi Suzuki :* Heat — 2:06.24 :* B-Final — 2:06.02 (→ 16th place) '''Men's 100m Breaststroke''' • Shigehiro Takahashi :* Heat — 1:04.71 :* B-Final — 1:04.41 (→ 10th place) • Kenji Watanabe :* Heat — 1:06.10 (→ did not advance, 9th place) '''Men's 200m Breaststroke''' • Shigehiro Takahashi :* Heat — 2:19.98 :* B-Final — 2:20.93 (→ 12th place) • Kenji Watanabe :* Heat — 2:22.33 :* B-Final — 2:22.29 (→ 15th place) '''Men's 100m Butterfly''' • Taihei Saka :* Heat — 56.40 (→ did not advance, 21st place) • Shudo Kawawa :* Heat — 56.52 (→ did not advance, 23rd place) '''Men's 200m Butterfly''' • Taihei Saka :* Heat — 2:00.66 :* B-Final — 2:00.31 (→ 9th place) • Shudo Kawawa :* Heat — 2:03.07 (→ did not advance, 18th place) '''Men's 200m Individual Medley''' • Shinji Ito :* Heat — 2:07.76 :* B-Final — 2:06.07 (→ 10th place) '''Men's 400m Individual Medley''' • Shinji Ito :* Heat — 4:30.52 :* B-Final — 4:29.76 (→ 13th place) '''Men's 4 × 100 m Freestyle Relay''' • Hiroshi Sakamoto, Shigeo Ogata, Taihei Saka, and Satoshi Sumida :* Heat — 3:30.45 (→ did not advance, 13th place) '''Men's 4 × 200 m Freestyle Relay''' • Taihei Saka, Hiroshi Sakamoto, Keisuke Okuno, and Shigeo Ogata :* Heat — DSQ (→ did not advance, no ranking) '''Men's 4 × 100 m Medley Relay''' • Daichi Suzuki, Shigehiro Takahashi, Taihei Saka, and Hiroshi Sakamoto :* Heat — 3:50.14 :* Final — DSQ (→ no ranking) '''Women's 100m Freestyle''' • Kaori Yanase :* Heat — 58.47 (→ did not advance, 17th place) • Chikako Nakamori :* Heat — 59.00 (→ did not advance, 21st place) '''Women's 200m Freestyle''' • Chikako Nakamori :* Heat — 2:03.94 :* B-Final — 2:04.11 (→ 13th place) • Kaori Yanase :* Heat — 2:04.38 :* B-Final — 2:05.24 (→ 16th place) '''Women's 400m Freestyle''' • Chikako Nakamori :* Heat — 4:20.13 :* B-Final — 4:20.18 (→ 14th place) • Junko Sakurai :* Heat — 4:28.68 (→ did not advance, 19th place) '''Women's 800m Freestyle''' • Junko Sakurai :* Heat — 9:13.27 (→ did not advance, 18th place) '''Women's 4 × 100 m Freestyle Relay''' • Junko Sakurai, Chikako Nakamori, Miki Saito, and Kaori Yanase :* Heat — 3:54.68 (→ did not advance) '''Women's 4 × 100 m Medley Relay''' • Naomi Sekido, Hiroko Nagasaki, Naoko Kume, and Kaori Yanase :* Heat — 4:17.59 :* Final — DSQ (→ no ranking) '''Women's 100m Backstroke''' • Naomi Sekido :* Heat — 1:05.60 (→ did not advance, 18th place) • Nozomi Sunouchi :* Heat — 1:07.23 (→ did not advance, 23rd place) '''Women's 200m Backstroke''' • Naomi Sekido :* Heat — 2:18.52 :* B-Final — 2:18.87 (→ 14th place) • Nozomi Sunouchi :* Heat — 2:25.05 (→ did not advance, 22nd place) '''Women's 200m Butterfly''' • Naoko Kume :* Heat — 2:13.31 :* Final — 2:12.57 (→ 6th place) • Kiyomi Takahashi :* Heat — 2:14.37 :* B-Final — 2:16.27 (→ 12th place) '''Women's 200m Individual Medley''' • Hideka Koshimizu :* Heat — 2:23.38 :* B-Final — 2:22.81 (→ 15th place) '''Women's 400m Individual Medley''' • Hideka Koshimizu :* Heat — 4:59.18 :* B-Final — 4:58.02 (→ 14th place) ==Synchronized swimming==

;Men's Team Competition • Preliminary Round (Group B) :* Defeated China (3-0) :* Defeated Italy (3-2) :* Defeated Egypt (3-0) :* Lost to Canada (0-3) • Classification Matches :* 5th/8th place: Lost to Argentina (1-3) :* 7th/8th place: Defeated China (3-0) → 7th place • Team Roster :* Koshi Sobu :* Eiji Shimomura :* Kazuya Mitake :* Eizaburo Mitsuhashi :* Hiroaki Okuno :* Yasushi Furukawa :* Shuji Yamada :* Mikiyasu Tanaka :* Kimio Sugimoto :* Minoru Iwata :* Akihiro Iwashima :* Shunichi Kawai ;Women's Team Competition • Preliminary Round (Group A) :* Defeated South Korea (3-1) :* Defeated Peru (3-0) :* Defeated Canada (3-0) • Semi Finals :* Lost to China (0-3) • Bronze Medal Match :* Defeated United States (3-1) → Bronze Medal • Team Roster :* Yumi Egami :* Kimie Morita :* Yuko Mitsuya :* Miyoko Hirose :* Kyoko Ishida :* Yoko Kagabu :* Norie Hiro :* Kayoko Sugiiyama :* Sachiko Otani :* Keiko Miyajima :* Emiko Odaka :* Kumie Nakada ==Water polo==

;Men's Team Competition • Preliminary Round (Group C) :* Lost to Italy (5-15) :* Lost to West Germany (8-15) :* Lost to Australia (2-15) • Final Round (Group E) :* Lost to China (4-10) :* Lost to Greece (7-14) :* Lost to Canada (5-8) :* Defeated Brazil (9-8) → 11th place • Team Roster :* Etsuji Fujita :* Yoshifumi Saito :* Koshi Fujimori :* Shingo Kai :* Narihito Taima :* Daisuke Houki :* Toshio Fukumoto :* Toshiyuki Miyahara :* Hisayoshi Nagata :* Koji Wakayoshi :* Hisaharu Saito :* Shinji Yamasaki :* Asami Oura ==Weightlifting==