# Switzerland at the 2023 World Aquatics Championships

Switzerland competed at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July.

## Medalists

| Medal | Name | Sport | Event | Date |
| Bronze | Roman Mityukov | Swimming | Men's 200 m backstroke | July 28 |

## Athletes by discipline

The following is the list of number of competitors participating at the Championships per discipline.
| Sport | Men | Women | Total |
| Diving | 3 | 1 | 4 |
| High diving | 2 | 1 | 3 |
| Open water swimming | 1 | 0 | 1 |
| Swimming | 6 | 2 | 8 |
| Total | 12 | 4 | 16 |

## Diving

Switzerland entered 4 divers.

### Men

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Thibaud Bucher | 1 m springboard | 231.75 | 58 | — | — | Did not advance | Did not advance |
| Guillaume Dutoit | 3 m springboard | 348.75 | 36 | Did not advance | Did not advance | Did not advance | Did not advance |
| Jonathan Suckow | 1 m springboard | 369.00 | 6 Q | — | — | 349.40 | 12 |
| Jonathan Suckow | 3 m springboard | 385.95 | 15 Q | 369.10 | 18 | Did not advance | Did not advance |
| Jonathan Suckow Guillaume Dutoit | 3 m synchro springboard | 342.69 | 12 Q | — | — | 372.33 | 8 |

### Women

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Michelle Heimberg | 1 m springboard | 251.90 | 4 Q | — | — | 258.35 | 8 |
| Michelle Heimberg | 3 m springboard | 271.85 | 22 | Did not advance | Did not advance | Did not advance | Did not advance |

## High diving

| Athlete | Event | Points | Rank |
| Matthias Appenzeller | Men's high diving | 315.30 | 14 |
| Jean-David Duval | Men's high diving | 222.20 | 21 |
| Morgane Herculano | Women's high diving | 196.30 | 18 |

## Open water swimming

Switzerland entered 1 open water swimmer.

### Men

| Athlete | Event | Time | Rank |
| Christian Schreiber | Men's 5 km | 56:48.9 | 18 |
| Christian Schreiber | Men's 10 km | 1:54:11.5 | 26 |

## Swimming

Switzerland entered 8 swimmers.

### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Jérémy Desplanches | 100 metre breaststroke | 1:00.95 | 23 | Did not advance | Did not advance | Did not advance | Did not advance |
| Jérémy Desplanches | 200 metre individual medley | 1:58.00 | 4 Q | 1:58.29 | 14 | Did not advance | Did not advance |
| Antonio Djakovic | 200 metre freestyle | 1:46.70 | 16 Q | 1:46.66 | 14 | Did not advance | Did not advance |
| Antonio Djakovic | 400 metre freestyle | 3:45.43 | 8 Q | — | — | 3:44.22 | 6 |
| Nils Liess | 100 metre freestyle | 50.24 | 48 | Did not advance | Did not advance | Did not advance | Did not advance |
| Roman Mityukov | 50 metre backstroke | 25.61 | 31 | Did not advance | Did not advance | Did not advance | Did not advance |
| Roman Mityukov | 100 metre backstroke | 53.57 | 6 Q | 53.32 | 10 | Did not advance | Did not advance |
| Roman Mityukov | 200 metre backstroke | 1:57.24 | 2 Q | 1:55.85 NR | 1 Q | 1:55.34 NR | |
| Noè Ponti | 50 metre butterfly | 23.13 | 5 Q | 23.26 | 13 | Did not advance | Did not advance |
| Noè Ponti | 100 metre butterfly | 51.00 | 4 Q | 51.17 | 8 Q | 51.23 | 7 |
| Noè Ponti | 200 metre butterfly | 1:55.85 | 12 Q | 1:55.44 | 11 | Did not advance | Did not advance |
| Marius Toscan | 400 metre individual medley | 4:21.24 | 17 | — | — | Did not advance | Did not advance |
| Antonio Djakovic Roman Mityukov Noe Ponti Nils Liess | 4 × 200 m freestyle relay | 7:10.87 | 14 | — | — | Did not advance | Did not advance |
| Roman Mityukov Jérémy Desplanches Noè Ponti Antonio Djakovic | 4 × 100 m medley relay | 3:35.46 NR | 15 | — | — | Did not advance | Did not advance |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Nina Kost | 50 metre freestyle | 25.80 | 39 | Did not advance | Did not advance | Did not advance | Did not advance |
| Nina Kost | 100 metre freestyle | 56.60 | 32 | Did not advance | Did not advance | Did not advance | Did not advance |
| Nina Kost | 50 metre backstroke | 29.00 | 33 | Did not advance | Did not advance | Did not advance | Did not advance |
| Nina Kost | 100 metre backstroke | 1:02.03 | 31 | Did not advance | Did not advance | Did not advance | Did not advance |
| Lisa Mamié | 50 metre breaststroke | 31.67 | 30 | Did not advance | Did not advance | Did not advance | Did not advance |
| Lisa Mamié | 100 metre breaststroke | 1:06.87 | 16 Q | 1:06.97 | 13 | Did not advance | Did not advance |
| Lisa Mamié | 200 metre breaststroke | 2:26.55 | 15 Q | 2:24.84 | 11 | Did not advance | Did not advance |