# 2018 FINA World Swimming Championships (25 m) – Men's 100 metre freestyle

The men's 100 metre freestyle competition of the 2018 FINA World Swimming Championships (25 m) was held on 15 and 16 December 2018.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record | Amaury Leveaux | France | 44.94 | Berlin | 13 December 2008 |
| Championship record | Vladimir Morozov | Russia | 45.51 | Doha | 3 December 2014 |

## Results
### Heats

The heats were started on 15 December at 10:36.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 9 | 0 | Caeleb Dressel | United States | 45.98 | Q |
| 2 | 12 | 4 | Vladimir Morozov | Russia | 46.20 | Q |
| 3 | 12 | 5 | Vladislav Grinev | Russia | 46.38 | Q |
| 4 | 11 | 4 | Blake Pieroni | United States | 46.39 | Q |
| 5 | 12 | 2 | Simonas Bilis | Lithuania | 46.65 | Q |
| 6 | 12 | 3 | Katsumi Nakamura | Japan | 46.70 | Q |
| 7 | 10 | 6 | Marcelo Chierighini | Brazil | 46.89 | Q |
| 8 | 12 | 7 | Alessandro Miressi | Italy | 46.94 | Q |
| 9 | 8 | 6 | Shane Ryan | Ireland | 46.97 | Q |
| 10 | 9 | 8 | Mehdy Metella | France | 46.99 | Q |
| 11 | 10 | 4 | Cameron McEvoy | Australia | 47.08 | Q |
| 12 | 12 | 0 | Danas Rapšys | Lithuania | 47.11 | Q |
| 13 | 12 | 6 | Sergii Shevtsov | Ukraine | 47.15 | Q |
| 14 | 11 | 3 | Lorenzo Zazzeri | Italy | 47.16 | Q |
| 15 | 10 | 5 | Chad le Clos | South Africa | 47.17 | Q |
| 16 | 12 | 1 | Jesse Puts | Netherlands | 47.23 | Q |
| 17 | 11 | 5 | Oussama Sahnoune | Algeria | 47.33 | |
| 18 | 8 | 5 | Daniel Hunter | New Zealand | 47.36 | |
| 19 | 11 | 2 | Louis Townsend | Australia | 47.38 | |
| 20 | 10 | 2 | Kenneth To | Hong Kong | 47.47 | |
| 21 | 10 | 7 | Christoffer Carlsen | Sweden | 47.50 | |
| 22 | 9 | 6 | Mislav Sever | Croatia | 47.56 | |
| 23 | 8 | 7 | Velimir Stjepanović | Serbia | 47.57 | |
| 24 | 10 | 8 | Damian Wierling | Germany | 47.58 | |
| 25 | 10 | 1 | Kristian Golomeev | Greece | 47.63 | |
| 26 | 11 | 8 | Stan Pijnenburg | Netherlands | 47.67 | |
| 27 | 12 | 9 | Artsiom Machekin | Belarus | 47.85 | |
| 28 | 9 | 3 | Ben Hockin | Paraguay | 47.91 | |
| 28 | 11 | 7 | Emmanuel Vanluchene | Belgium | 47.91 | |
| 30 | 12 | 8 | Kaiya Seki | Japan | 47.94 | |
| 31 | 9 | 1 | Maxim Lobanovskij | Hungary | 48.03 | |
| 32 | 11 | 0 | Cao Jiwen | China | 48.04 | |
| 33 | 8 | 3 | Jan Świtkowski | Poland | 48.08 | |
| 34 | 7 | 5 | Cristian Quintero | Venezuela | 48.14 | |
| 35 | 10 | 9 | Markus Lie | Norway | 48.16 | |
| 35 | 11 | 6 | Konrad Czerniak | Poland | 48.16 | |
| 37 | 8 | 9 | Ali Khalafalla | Egypt | 48.17 | NR |
| 38 | 9 | 5 | Alexander Trampitsch | Austria | 48.24 | |
| 39 | 8 | 4 | Nils Liess | Switzerland | 48.34 | |
| 40 | 9 | 2 | Bradley Vincent | Mauritius | 48.35 | |
| 41 | 10 | 0 | Hou Yuije | China | 48.59 | |
| 42 | 9 | 9 | Adil Kaskabay | Kazakhstan | 48.82 | |
| 43 | 9 | 4 | Kregor Zirk | Estonia | 48.87 | |
| 44 | 8 | 2 | Andrew James Digby | Thailand | 48.91 | |
| 45 | 7 | 4 | Guido Buscaglia | Argentina | 49.18 | |
| 46 | 8 | 8 | Riku Pöytäkivi | Finland | 49.27 | |
| 47 | 9 | 7 | Julien Henx | Luxembourg | 49.48 | |
| 48 | 7 | 1 | Lin Chien-Liang | China | 49.57 | |
| 49 | 7 | 0 | Nikola Bjelajac | Bosnia and Herzegovina | 49.59 | |
| 50 | 7 | 6 | Virdhawal Khade | India | 49.67 | |
| 51 | 7 | 8 | Alex Sobers | Barbados | 49.71 | |
| 52 | 6 | 7 | Mohammed Bedour | Jordan | 49.73 | |
| 53 | 8 | 1 | Igor Mogne | Mozambique | 49.82 | |
| 54 | 6 | 4 | Isaac Beitia Lasso | Panama | 50.03 | |
| 55 | 8 | 0 | Dado Fenrir Jasminuson | Iceland | 50.19 | |
| 56 | 7 | 2 | Sebastian Arispe | Peru | 50.21 | |
| 57 | 6 | 3 | Jean-Luc Zephir | Saint Lucia | 50.44 | |
| 58 | 5 | 4 | Sina Gholampour | Iran | 50.47 | |
| 59 | 5 | 3 | S.J.Bernardina | Curaçao | 50.48 | |
| 60 | 6 | 2 | Kaloyan Bratanov | Bulgaria | 50.52 | |
| 61 | 7 | 3 | Abdoul Niane | Senegal | 50.55 | |
| 62 | 6 | 1 | Pedro Chiancone | Uruguay | 50.57 | |
| 63 | 7 | 9 | Giorgi Biganishvili | Georgia | 50.62 | |
| 64 | 7 | 7 | Kyle Abeysinghe | Sri Lanka | 50.78 | |
| 65 | 5 | 1 | Dan Siminel | Moldova | 50.92 | |
| 66 | 6 | 5 | Jhonny Pérez | Dominican Republic | 51.03 | |
| 67 | 5 | 7 | Kohen Kerr | Bahamas | 51.18 | |
| 68 | 6 | 9 | Stefano Mitchell | Antigua and Barbuda | 51.23 | |
| 69 | 5 | 6 | Souhail Hamouchane | Morocco | 51.30 | |
| 70 | 5 | 8 | Delron Felix | Grenada | 51.35 | |
| 71 | 4 | 7 | Danilo Rosafio | Kenya | 51.37 | |
| 72 | 6 | 6 | Matt Galea | Malta | 51.40 | |
| 73 | 6 | 8 | Nixon Hernández | El Salvador | 51.43 | |
| 74 | 4 | 5 | Issa al Adawi | Oman | 51.48 | |
| 75 | 3 | 7 | Dean Hoffman | Seychelles | 51.58 | |
| 76 | 5 | 9 | Vladimir Mamikonyan | Armenia | 51.59 | |
| 77 | 2 | 9 | Bakr Al-Dulaimi | Iraq | 51.73 | |
| 78 | 4 | 4 | Mohammad Rahman | Bangladesh | 51.76 | |
| 79 | 6 | 0 | Sidrell Williams | Jamaica | 52.11 | |
| 80 | 4 | 2 | Gianluca Pasolini | San Marino | 52.55 | |
| 81 | 5 | 5 | Firas Saidi | Qatar | 52.58 | |
| 82 | 2 | 1 | Musa Zhalayev | Turkmenistan | 52.84 | |
| 83 | 4 | 6 | Hilal Hemed Hilal | Tanzania | 52.88 | |
| 84 | 2 | 6 | Heriniavo Rasolonjatovo | Madagascar | 53.30 | |
| 85 | 3 | 0 | Delgerkhuu Myagmar | Mongolia | 53.41 | |
| 86 | 4 | 8 | Noel Keane | Palau | 53.67 | |
| 87 | 5 | 2 | Christian Nikles | Brunei | 53.74 | |
| 88 | 4 | 3 | Thomas Morriss | Samoa | 53.79 | |
| 89 | 5 | 0 | Chase Onorati | Zimbabwe | 53.85 | |
| 90 | 1 | 5 | Shane Cadogan | Saint Vincent and the Grenadines | 53.88 | |
| 91 | 3 | 8 | Kener Torrez | Nicaragua | 54.33 | |
| 92 | 1 | 4 | Fadhil Saleh | Uganda | 54.36 | |
| 93 | 2 | 2 | James Hendrix | Guam | 54.46 | |
| 94 | 1 | 3 | Colins Ebingha | Nigeria | 54.85 | |
| 95 | 4 | 1 | Nabeel Hatoum | Palestine | 55.26 | |
| 96 | 3 | 4 | Dion Kadriu | Kosovo | 55.36 | |
| 97 | 4 | 0 | Josh Tarere | Papua New Guinea | 55.66 | |
| 98 | 4 | 9 | Kaleo Kihleng | Federated States of Micronesia | 55.83 | |
| 99 | 2 | 3 | Finau Ohuafi | Tonga | 55.90 | |
| 100 | 3 | 9 | Carel Irakoze | Burundi | 56.28 | |
| 101 | 3 | 5 | Lennosuke Suzuki | Northern Mariana Islands | 56.91 | |
| 102 | 2 | 5 | Yousif Ibrahim | Sudan | 57.42 | |
| 103 | 2 | 8 | Chanthol Thoeun | Cambodia | 57.61 | |
| 104 | 2 | 4 | Nadeem Younas | Pakistan | 58.00 | |
| 105 | 3 | 1 | Vadym Semkiv | Saint Martin | 59.53 | |
| 106 | 1 | 6 | Tokelo Makepe | Botswana | 1:02.54 | |
| 107 | 3 | 3 | Clifton Daromani | Solomon Islands | 1:04.67 | |
| 108 | 3 | 6 | Mamadou Tahirou Bah | Guinea | 1:07.56 | |
| 109 | 2 | 7 | D.R.da Silva | Timor-Leste | 1:10.42 | |
| | 2 | 0 | Fenel Lamour | Haiti | DNS | |
| | 10 | 3 | César Cielo | Brazil | DNS | |
| | 11 | 1 | Huseyin Sakci | Turkey | DNS | |
| | 11 | 9 | Dylan Carter | Trinidad and Tobago | DNS | |
| | 3 | 2 | Phillip Kinono | Marshall Islands | DSQ | |

### Semifinals

The semifinals were started on 15 December at 19:15.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Vladimir Morozov | Russia | 45.93 | Q |
| 2 | 3 | Katsumi Nakamura | Japan | 46.24 | Q |
| 3 | 5 | Blake Pieroni | United States | 46.31 | Q |
| 4 | 2 | Mehdy Metella | France | 46.53 | Q |
| 5 | 6 | Alessandro Miressi | Italy | 46.84 | |
| 6 | 1 | Lorenzo Zazzeri | Italy | 46.98 | |
| 7 | 8 | Jesse Puts | Netherlands | 47.23 | |
| 8 | 7 | Danas Rapšys | Lithuania | 47.25 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | Chad le Clos | South Africa | 45.89 | Q |
| 2 | 4 | Caeleb Dressel | United States | 46.09 | Q |
| 3 | 5 | Vladislav Grinev | Russia | 46.23 | Q |
| 4 | 3 | Simonas Bilis | Lithuania | 46.46 | Q |
| 5 | 7 | Cameron McEvoy | Australia | 46.69 | |
| 6 | 1 | Sergii Shevtsov | Ukraine | 46.86 | |
| 7 | 2 | Shane Ryan | Ireland | 46.93 | |
| 7 | 6 | Marcelo Chierighini | Brazil | 46.93 | |

### Final

The final was held on 16 December at 18:35.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 3 | Caeleb Dressel | United States | 45.62 | NR |
| | 5 | Vladimir Morozov | Russia | 45.64 | |
| | 4 | Chad le Clos | South Africa | 45.89 | |
| 4 | 6 | Vladislav Grinev | Russia | 45.92 | |
| 5 | 1 | Simonas Bilis | Lithuania | 46.11 | NR |
| 6 | 8 | Mehdy Metella | France | 46.51 | |
| 7 | 2 | Katsumi Nakamura | Japan | 46.57 | |
| 7 | 7 | Blake Pieroni | United States | 46.57 | |