# Japan at the 2015 World Championships in Athletics

Japan competed at the 2015 World Championships in Athletics in Beijing, China, from 22–30 August 2015.

## Medalists

The following Japanese competitors won medals at the Championships
| Medal | Athlete | Event | Date |
| Bronze | Takayuki Tanii | 50 kilometres walk | 29 August |

## Results

(q – qualified, NM – no mark, SB – season best)

### Men
#### Track and road events

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Kei Takase | 100 metres | 10.15 | 4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kei Takase | 200 metres | 20.33 | 4 q | 20.64 | 8 | Did not advance | Did not advance |
| Kenji Fujimitsu | 200 metres | 20.28 | 2 Q | 20.34 | 7 | Did not advance | Did not advance |
| Abdul Hakim Sani Brown | 200 metres | 20.35 | 2 Q | 20.47 | 5 | Did not advance | Did not advance |
| Yuzo Kanemaru | 400 metres | 45.65 | 6 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kota Murayama | 5000 metres | 14:07.11 | 17 | — | — | Did not advance | Did not advance |
| Suguru Osako | 5000 metres | 13:45.82 | 7 | — | — | Did not advance | Did not advance |
| Kenta Murayama | 10,000 metres | — | — | — | — | 29:50.22 | 22 |
| Yuta Shitara | 10,000 metres | — | — | — | — | 30:08.35 | 23 |
| Tetsuya Yoroizaka | 10,000 metres | — | — | — | — | 28:25.77 | 18 |
| Masakazu Fujiwara | Marathon | — | — | — | — | 2:21:06 SB | 21 |
| Kazuhiro Maeda | Marathon | — | — | — | — | 2:32:49 | 40 |
| Takayuki Kishimoto | 400 metres hurdles | 49.78 | 8 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuta Konishi | 400 metres hurdles | 49.58 SB | 6 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuki Matsushita | 400 metres hurdles | 49.34 | 4 Q | 51.10 | 8 | Did not advance | Did not advance |
| Kazuma Ōseto Kenji Fujimitsu Takuya Nagata Kotaro Taniguchi | 4 × 100 metres relay | 38.60 | 4 | — | — | Did not advance | Did not advance |
| Tomoya Tamura Yuzo Kanemaru Naoki Kobayashi Takamasa Kitagawa | 4 × 400 metres relay | 3:02.97 SB | 7 | — | — | Did not advance | Did not advance |
| Isamu Fujisawa | 20 kilometres walk | — | — | — | — | 1:21:51 | 13 |
| Yusuke Suzuki | 20 kilometres walk | — | — | — | — | DNF | DNF |
| Eiki Takahashi | 20 kilometres walk | — | — | — | — | 1:28:30 | 47 |
| Hirooki Arai | 50 kilometres walk | — | — | — | — | 3:43:44 | 4 |
| Takayuki Tanii | 50 kilometres walk | — | — | — | — | 3:42:55 | |
| Yuki Yamazaki | 50 kilometres walk | — | — | — | — | 4:03:54 | 34 |

#### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Takashi Eto | High jump | 2.22 | 28 | Did not advance | Did not advance |
| Yuji Hiramatsu | High jump | 2.17 | 35 | Did not advance | Did not advance |
| Naoto Tobe | High jump | 2.26 | 25 | Did not advance | Did not advance |
| Hiroki Ogita | Pole vault | 5.65 SB | 20 | Did not advance | Did not advance |
| Seito Yamamoto | Pole vault | 5.65 SB | 23 | Did not advance | Did not advance |
| Yohei Sugai | Long jump | 7.92 | 16 | Did not advance | Did not advance |
| Ryohei Arai | Javelin throw | 84.66 SB | 2 Q | 83.07 | 9 |

#### Combined events – Decathlon

| Athlete | Event | 100 m | LJ | SP | HJ | 400 m | 110H | DT | PV | JT | 1500 m | Final | Rank |
| Akihiko Nakamura | Result | 10.86 | 7.26 | 11.67 | 1.95 | 47.81 | 14.72 | 33.48 | 4.70 | 53.57 PB | 4:16.36 | 7745 | 16 |
| Akihiko Nakamura | Points | 892 | 876 | 586 | 758 | 918 | 884 | 633 | 819 | 642 | 837 | 7745 | 16 |
| Keisuke Ushiro | Result | 11.51 | 6.73 | 14.93 | 1.89 | 50.85 | 15.43 | 46.85 | 4.70 | 56.52 | 4:43.51 | 7532 | 20 |
| Keisuke Ushiro | Points | 750 | 750 | 785 | 705 | 776 | 798 | 805 | 819 | 686 | 658 | 7532 | 20 |

### Women
#### Track and road events

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Chisato Fukushima | 100 metres | 11.23 SB | 3 Q | 11.32 | 7 | Did not advance | Did not advance |
| Chisato Fukushima | 200 metres | 23.30 | 5 | Did not advance | Did not advance | Did not advance | Did not advance |
| Misaki Onishi | 5000 metres | 15:33.84 | 6 q | — | — | 15:29.63 | 14 |
| Azusa Sumi | 5000 metres | 16:13.65 | 11 | — | — | Did not advance | Did not advance |
| Ayuko Suzuki | 5000 metres | 15:28.18 | 6 q | — | — | 15:08.29 PB | 9 |
| Kasumi Nishihara | 10,000 metres | — | — | — | — | 32:12.95 | 13 |
| Rei Ohara | 10,000 metres | — | — | — | — | 32:47.74 | 22 |
| Yuka Takashima | 10,000 metres | — | — | — | — | 32:27.79 | 20 |
| Mai Ito | Marathon | — | — | — | — | 2:29:48 | 7 |
| Sairi Maeda | Marathon | — | — | — | — | 2:31:46 | 13 |
| Risa Shigetomo | Marathon | — | — | — | — | 2:32:37 | 14 |
| Seika Aoyama Kana Ichikawa Asami Chiba Sayaka Aoki | 4 × 400 metres relay | 3:28.91 NR | 7 | — | — | Did not advance | Did not advance |
| Kumiko Okada | 20 kilometres walk | — | — | — | — | 1:34:56 | 25 |

#### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Yuki Ebihara | Javelin throw | 60.30 | 19 | Did not advance | Did not advance |

## Sources

* Japanese team