# Czech Republic at the 2023 World Athletics Championships

The Czech Republic competed at the 2023 World Athletics Championships in Budapest, Hungary, from 19 to 27 August 2023.

## Medallists

| Medal | Name | Event | Date |
| Bronze | Matěj Krsek Tereza Petržilková Patrik Šorm Lada Vondrová | Mixed 4 × 400 metres relay | 19 August |
| Bronze | Jakub Vadlejch | Men's javelin throw | 27 August |

## Results

Czech Republic entered 23 athletes.

### Key

* Q = Qualified for the next round
* q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
* NR = National record
* PB = Personal best
* SB = Season best
* N/A = Round not applicable for the event

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

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Ondřej Macík | 200 metres | 20.40 | 3 Q | 20.71 | 8 | Did not advance | Did not advance |
| Matěj Krsek | 400 metres | 45.99 | 6 | Did not advance | Did not advance | Did not advance | Did not advance |
| Vít Müller | 400 metres hurdles | 49.37 | 7 | Did not advance | Did not advance | Did not advance | Did not advance |
| Matěj Krsek Pavel Maslák Vít Müller Patrik Šorm | 4 × 400 metres relay | 3:00.99 | 6 NR | — | Did not advance | Did not advance |

#### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Radek Juška | Long jump | 8.10 | 9 q | 7.98 | 7 |
| Tomáš Staněk | Shot put | 20.41 | 16 | Did not advance | Did not advance |
| Patrik Hájek | Hammer throw | 68.77 | 32 | Did not advance | Did not advance |
| Jakub Vadlejch | Javelin throw | 83.50 | 3 Q | 86.67 | |

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

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Tereza Petržilková | 400 metres | 51.30 | 3 Q | 51.94 | 8 | Did not advance | Did not advance |
| Lada Vondrová | 400 metres | 50.92 PB | 4 q | 51.50 | 7 | Did not advance | Did not advance |
| Kristiina Mäki | 1500 metres | 4:06.90 | 9 | Did not advance | Did not advance | Did not advance | Did not advance |
| Moira Stewartová | Marathon | — | 2:34:02 | 26 |
| Nikoleta Jíchová | 400 metres hurdles | 55.10 | 4 Q | 55.01 | 6 | Did not advance | Did not advance |
| Eliška Martínková | 20 kilometres walk | — | 1:34:02 | 27 |
| Tereza Ďurdiaková | 35 kilometres walk | — | 2:49:06 NR | 10 |

#### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Michaela Hrubá | High jump | 1.85 | 20 | Did not advance | Did not advance |
| Amálie Švábíková | Pole vault | 4.65 | 7 Q | 4.50 | 11 |
| Irena Gillarová | Javelin throw | 54.15 | 32 | Did not advance | Did not advance |
| Nikola Ogrodníková | Javelin throw | 54.59 | 28 | Did not advance | Did not advance |
| Nikol Tabačková | Javelin throw | 55.45 | 24 | Did not advance | Did not advance |

### Mixed
#### Track events

| Athlete | Event | Heat | Heat | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank |
| Matěj Krsek Tereza Petržilková Patrik Šorm Lada Vondrová | 4 × 400 metres relay | 3:12.52 | 6 Q | 3:11.98 NR | |