| Iaaf: | CZE |
| Flagcaption: | Flag of the Czech Republic |
| Games Link: | 2017 World Championships in Athletics |
| Year: | 2017 |
| Games: | World Championships in Athletics |
| Fedname: | Czech Athletics Federation |
| Location: | London, United Kingdom |
| Date: | 4–13 August 2017 |
| Competitors: | 27 |
| Competitors Men: | 12 |
| Competitors Women: | 15 |
| Events: | 17 |
| Rank: | 10[1] |
| Gold: | 1 |
| Silver: | 1 |
| Bronze: | 1 |
| Appearances: | auto |
Czech Republic competed at the 2017 World Championships in Athletics in London, United Kingdom, from 4–13 August 2017.
| Medal | Athlete | Event | Date | |
|---|---|---|---|---|
| Barbora Špotáková | Women's javelin throw | 8 August | ||
| Jakub Vadlejch | Men's javelin throw | 12 August | ||
| Petr Frydrych | Men's javelin throw | 12 August |
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Result | Rank | Result | Rank | Result | Rank | |||
| Pavel Maslák | 400 metres | 45.10 | 12 q | 45.24 | 17 | colspan=2 | ||
| Jakub Holuša | 1500 metres | 3:42.31 | 13 Q | 3:38.05 | 1 Q | 3:34.89 | 5 | |
| Athlete | Event | Qualification | Final | |||
|---|---|---|---|---|---|---|
| Distance | Position | Distance | Position | |||
| Michal Balner | align=left rowspan=2 | Pole vault | 5.45 | 25 | colspan=2 rowspan=2 | |
| Jan Kudlička | 5.45 | 19 | ||||
| Radek Juška | Long jump | 8.24 | 1 Q | 8.02 | 10 | |
| Ladislav Prášil | align=left rowspan=2 | Shot put | 20,04 | 18 | colspan=2 | |
| Tomáš Staněk | 20.76 | 9 Q | 21.41 | 4 | ||
| Petr Frydrych | align=left rowspan=4 | Javelin throw | 86.22 | 2 Q | 88.32 | |
| Jaroslav Jílek | 80.97 | 16 | colspan=2 | |||
| Jakub Vadlejch | 83.87 | 9 Q | 89.73 | |||
| Vítězslav Veselý | 75.50 | 26 | ||||
| Athlete | Event | Final | Rank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adam Helcelet | style=font-size:95% | Result | 11.28 | 7.03 | 14.57 | 2.02 | 49.51 | 14.38 | 44.71 | 4.90 | 71.56 | 4:36.85 | 8222 | 8 |
| style=font-size:95% | Points | 799 | 821 | 763 | 822 | 837 | 926 | 761 | 880 | 913 | 700 |
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Result | Rank | Result | Rank | Result | Rank | |||
| Simona Vrzalová | 1500 metres | – | colspan=4 | |||||
| Eva Vrabcová-Nývltová | Marathon | 2:29:56 | 14 | |||||
| Zuzana Hejnová | align=left rowspan=2 | 400 metres hurdles | 55.05 | 4 Q | 54.59 | 1 Q | 54.20 | 4 |
| Denisa Rosolová | 55.41 | 10 Q | 56.40 | 17 | colspan=2 | |||
| Lucie Sekanová | 3000 metres steeplechase | 10:09.67 | 37 | colspan=2 | ||||
| Anežka Drahotová | 20 kilometres walk | – | ||||||
| Athlete | Event | Qualification | Final | ||||
|---|---|---|---|---|---|---|---|
| Distance | Position | Distance | Position | ||||
| Michaela Hrubá | High jump | 1.92 | 10 q | 1.92 | 11 | ||
| Romana Maláčová | align=left rowspan=3 | Pole vault | 4.35 | =18 | colspan=2 rowspan=3 | ||
| Jiřina Ptáčníková | 4.35 | =18 | |||||
| Amálie Švábíková | – | ||||||
| Nikola Ogrodníková | align=left rowspan=2 | Javelin throw | 59.99 | 17 | colspan=2 | ||
| Barbora Špotáková | 64.32 | 6 Q | 66.76 | ||||
| Kateřina Šafránková | align=left rowspan=1 | Hammer throw | 70.67 | 11 q | 71.34 | 11 | |
| Athlete | Event | Final | Rank | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kateřina Cachová | style=font-size:95% | Result | 13.39 | 1.74 | 11.84 | 24.56 | 6.15 | 43.67 | 2:15.58 | 6070 | 15 |
| style=font-size:95% | Points | 1069 | 903 | 651 | 928 | 896 | 738 | 885 | |||
| Eliška Klučinová | style=font-size:95% | Result | 14.03 | 1.86 | 14.80 | 24.72 | 6.16 | 41.91 | 2:13.00 | 6313 | 10 |
| style=font-size:95% | Points | 974 | 1055 | 847 | 913 | 899 | 704 | 921 |