# 2024 World Aquatics Swimming Championships (25 m) – Men's 100 metre freestyle

The Men's 100 metre freestyle competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 11 and 12 December 2024.

## Records

Prior to the competition, the existing world and championship records were as follows:
| World record | Kyle Chalmers (AUS) | 44.84 | Kazan, Russia | 29 October 2021 |
| Competition record | Kyle Chalmers (AUS) | 45.16 | Melbourne, Australia | 15 December 2022 |
The following records were established during the competition:
| Date | Round | Name | Nationality | Time | Record |
| 10 December | Final* | Jack Alexy | United States | 45.05 | CR |
| 11 December | Heat 9 | Jordan Crooks | Cayman Islands | 44.95 | CR |
* Split from the men's 4 × 100 m freestyle relay

## Results
### Heats

The heats were started on 11 December at 09:23.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 9 | 8 | Jordan Crooks | Cayman Islands | 44.95 | Q, CR, AM |
| 2 | 10 | 1 | Chris Guiliano | United States | 45.94 | Q |
| 3 | 11 | 4 | Maxime Grousset | France | 46.01 | Q |
| 4 | 9 | 4 | Guilherme Caribé | Brazil | 46.06 | Q |
| 5 | 11 | 5 | Egor Kornev | Neutral Athletes B | 46.07 | Q |
| 6 | 11 | 2 | Shane Ryan | Ireland | 46.23 | Q, NR |
| 7 | 8 | 1 | Youssef Ramadan | Egypt | 46.24 | Q, NR |
| 8 | 9 | 2 | Heiko Gigler | Austria | 46.45 | Q, NR |
| 9 | 10 | 7 | Jack Alexy | United States | 46.57 | Q |
| 10 | 9 | 0 | Jere Hribar | Croatia | 46.60 | Q |
| =11 | 8 | 6 | Tomas Navikonis | Lithuania | 46.63 | Q |
| =11 | 11 | 3 | Dylan Carter | Trinidad and Tobago | 46.63 | Q, WD |
| 13 | 9 | 7 | Rafael Miroslaw | Germany | 46.74 | Q |
| 14 | 10 | 4 | Alessandro Miressi | Italy | 46.82 | Q |
| =15 | 8 | 8 | Lamar Taylor | Bahamas | 46.89 | Q, NR |
| =15 | 9 | 9 | Kamil Sieradzki | Poland | 46.89 | Q |
| 17 | 9 | 5 | Leonardo Deplano | Italy | 46.98 | R |
| 18 | 10 | 5 | Nándor Németh | Hungary | 47.00 | R |
| 19 | 11 | 8 | Patrick Dinu | Romania | 47.05 | |
| 20 | 7 | 9 | Tomas Koski | Finland | 47.13 | NR |
| 21 | 8 | 9 | Robin Hanson | Sweden | 47.18 | |
| 22 | 9 | 3 | Marco Antonio Ferreira | Brazil | 47.19 | |
| 23 | 10 | 3 | Dmitrii Zhavoronkov | Neutral Athletes B | 47.22 | |
| =24 | 9 | 6 | Wudi Liu | China | 47.24 | |
| =24 | 10 | 0 | Yuri Kisil | Canada | 47.24 | |
| 26 | 11 | 7 | Harrison Turner | Australia | 47.31 | |
| =27 | 9 | 1 | Sergio de Celis | Spain | 47.47 | |
| =27 | 10 | 9 | Mikel Schreuders | Aruba | 47.47 | |
| 29 | 11 | 9 | Luis Domínguez | Spain | 47.64 | |
| 30 | 11 | 6 | Kaiya Seki | Japan | 47.67 | |
| 31 | 7 | 0 | Deniel Nankov | Bulgaria | 47.71 | |
| 32 | 10 | 8 | Matej Duša | Slovakia | 47.84 | |
| 33 | 8 | 4 | Bjørnar Grytnes Laskerud | Norway | 47.85 | |
| 34 | 6 | 4 | Simon Doueihy | Lebanon | 47.91 | NR |
| 35 | 10 | 6 | Edward Sommerville | Australia | 47.96 | |
| 36 | 11 | 0 | Velimir Stjepanović | Serbia | 47.99 | |
| 37 | 8 | 3 | Luong Jérémie Loïc Nino | Vietnam | 48.11 | NR |
| 38 | 7 | 4 | Adilbek Mussin | Kazakhstan | 48.17 | |
| 39 | 6 | 3 | Martin Kartavi | Israel | 48.21 | |
| 40 | 7 | 8 | Roman Mityukov | Switzerland | 48.27 | |
| 41 | 11 | 1 | Emre Gürdenli | Turkey | 48.28 | |
| =42 | 5 | 4 | Diego Aranda | Uruguay | 48.44 | NR |
| =42 | 7 | 7 | Konstantinos Englezakis | Greece | 48.44 | |
| 44 | 5 | 5 | Marwane Sebbata | Morocco | 48.48 | NR |
| 45 | 6 | 2 | Yin Chuen Lim | Malaysia | 48.49 | NR |
| 46 | 8 | 7 | Ardi Azman | Singapore | 48.57 | |
| =47 | 7 | 1 | Lars Kuljus | Estonia | 48.66 | |
| =47 | 8 | 0 | Daniel Gracík | Czech Republic | 48.66 | |
| 49 | 7 | 2 | Rafael Ponce | Peru | 48.81 | NR |
| 50 | 6 | 8 | Samyar Abdoli | Iran | 48.89 | |
| 51 | 6 | 0 | Gabriel Martinez | Honduras | 48.91 | |
| 52 | 6 | 1 | Javier Núñez | Dominican Republic | 49.03 | NR |
| 53 | 7 | 3 | Adi Mešetović | Bosnia and Herzegovina | 49.05 | |
| 54 | 8 | 2 | Pongpanod Trithan | Thailand | 49.10 | |
| 55 | 8 | 5 | Hugo Wrathall | New Zealand | 49.39 | |
| 56 | 10 | 2 | Ruard Van Renen | South Africa | 49.43 | |
| 57 | 1 | 5 | William Birkett Feraud | Ecuador | 49.52 | |
| 58 | 7 | 5 | Enkhtamir Batbayar | Mongolia | 49.71 | |
| 59 | 7 | 6 | Luka Kukhalashvili | Georgia | 49.73 | |
| 60 | 4 | 2 | Miguel Vasquez | Guatemala | 49.79 | |
| 61 | 6 | 6 | Grisi Koxhaku | Albania | 49.89 | |
| 62 | 6 | 5 | Adrian Vargas | Costa Rica | 49.91 | |
| 63 | 5 | 9 | Colins Obi Ebingha | Nigeria | 49.96 | NR |
| 64 | 4 | 6 | Jovan Jankovski | North Macedonia | 50.30 | |
| 65 | 5 | 7 | Musa Zhalayev | Turkmenistan | 50.37 | NR |
| 66 | 5 | 2 | Stefano Mitchell | Antigua and Barbuda | 50.38 | |
| =67 | 5 | 0 | Aryaan Din | Pakistan | 50.47 | NR |
| =67 | 5 | 1 | Hansel Mccaig | Fiji | 50.47 | |
| 69 | 4 | 4 | Hector Langkilde | Samoa | 50.73 | |
| 70 | 4 | 3 | Nixon Hernández | El Salvador | 50.77 | |
| 71 | 4 | 5 | Mohamad Zubaid | Kuwait | 51.09 | |
| 72 | 4 | 1 | Collins Saliboko | Tanzania | 51.10 | |
| 73 | 6 | 9 | Tendo Mukalazi | Uganda | 51.20 | |
| 74 | 5 | 3 | Alaa Maso | ART | 51.33 | |
| 75 | 3 | 4 | Israel Poppe | Guam | 51.36 | |
| 76 | 1 | 4 | Ismael Jair Holtuin | Suriname | 51.38 | |
| 77 | 1 | 2 | Adnan Al-Abdallat | Jordan | 51.46 | |
| 78 | 3 | 5 | Belly-Cresus Ganira | Burundi | 51.49 | |
| 79 | 4 | 7 | Antoine De Lapparent | Cambodia | 51.52 | |
| 80 | 4 | 0 | Mohammed Jibali | Libya | 51.55 | |
| 81 | 4 | 9 | Finau Ohuafi | Tonga | 52.16 | |
| 82 | 3 | 2 | Mohame Aan Hussain | Maldives | 52.29 | |
| 83 | 3 | 0 | Joel Ling | Brunei | 52.41 | |
| 84 | 3 | 1 | Mohammed Hani S Al Zaki | Saudi Arabia | 52.54 | NR |
| 85 | 4 | 8 | Amos Ferley | Seychelles | 52.75 | |
| 86 | 3 | 3 | Rony Daher | Bolivia | 53.03 | |
| 87 | 5 | 8 | Sidrell Williams | Jamaica | 53.15 | |
| 88 | 1 | 3 | Kenale Alleyne | Saint Vincent and the Grenadines | 53.21 | |
| 89 | 3 | 6 | Ardasher Gadoev | Tajikistan | 55.06 | |
| 90 | 2 | 4 | Yousif Ibrahim | Sudan | 55.40 | NR |
| 91 | 3 | 8 | Baritiana Andriampenomanana | Madagascar | 55.69 | |
| 92 | 3 | 7 | Sangay Tenzin | Bhutan | 55.73 | |
| 93 | 3 | 9 | Cedrick Niyibizi | Rwanda | 56.38 | |
| 94 | 2 | 6 | Houmed Houssein Barkat | Djibouti | 56.77 | NR |
| 95 | 2 | 2 | Christian Chang-Chipolina | Gibraltar | 58.12 | |
| 96 | 2 | 5 | Asher Banda | Malawi | 58.32 | |
| 97 | 2 | 3 | Elhadj N'Gnane Diallo | Guinea | 58.71 | |
| 98 | 1 | 6 | Phixaiyadeth Thirakul | Laos | 1:00.83 | |
| 99 | 2 | 7 | Ousman Jobe | Gambia | 1:04.03 | |
| 100 | 2 | 1 | Jolanio Guterres | Timor-Leste | 1:04.39 | |
| 101 | 1 | 1 | Jaya Corder | Marshall Islands | 1:05.50 | |
| | 1 | 7 | Thabo Motsopa | Lesotho | Did not start | Did not start |
| | 2 | 0 | M. Mamane Hamissou Abba | Niger | Did not start | Did not start |
| | 2 | 8 | Pedro Rogery | Guinea-Bissau | Did not start | Did not start |
| | 5 | 6 | Matthew Abeysinghe | Sri Lanka | Did not start | Did not start |
| | 6 | 7 | Ian Ho | Hong Kong | Did not start | Did not start |

### Semifinals

The semifinals were started on 11 December at 17:58.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Jordan Crooks | Cayman Islands | 45.22 | Q |
| 2 | 2 | 2 | Jack Alexy | United States | 45.29 | Q |
| 3 | 2 | 3 | Egor Kornev | Neutral Athletes B | 45.52 | Q |
| 4 | 2 | 5 | Maxime Grousset | France | 45.59 | Q |
| 5 | 2 | 1 | Alessandro Miressi | Italy | 45.69 | Q |
| 6 | 1 | 5 | Guilherme Caribé | Brazil | 45.86 | Q |
| 7 | 1 | 4 | Chris Guiliano | United States | 46.08 | Q |
| 8 | 2 | 7 | Tomas Navikonis | Lithuania | 46.09 | Q, NR |
| 9 | 1 | 2 | Jere Hribar | Croatia | 46.18 | R |
| 10 | 1 | 3 | Shane Ryan | Ireland | 46.24 | R |
| 11 | 1 | 8 | Leonardo Deplano | Italy | 46.29 | |
| 12 | 1 | 7 | Rafael Miroslaw | Germany | 46.33 | |
| 13 | 1 | 1 | Lamar Taylor | Bahamas | 46.34 | NR |
| 14 | 2 | 6 | Youssef Ramadan | Egypt | 46.41 | |
| 15 | 2 | 8 | Kamil Sieradzki | Poland | 46.43 | |
| 16 | 1 | 6 | Heiko Gigler | Austria | 46.46 | |

### Final

The final was held on 12 December at 17:40.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 5 | Jack Alexy | United States | 45.38 | |
| | 7 | Guilherme Caribé | Brazil | 45.47 | SA |
| | 4 | Jordan Crooks | Cayman Islands | 45.48 | |
| 4 | 1 | Chris Guiliano | United States | 45.51 | |
| 5 | 3 | Egor Kornev | Neutral Athletes B | 45.58 | |
| 6 | 6 | Maxime Grousset | France | 45.78 | |
| 7 | 2 | Alessandro Miressi | Italy | 45.93 | |
| 8 | 8 | Tomas Navikonis | Lithuania | 46.25 | |