Heats
vendredi 28 juillet 2017, 10h09 GMT – 10h09 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Caeleb Dressel | United States | 50.08″ |
| 2 |  Piero Codia | Italy | + 1.01″ |
| 3 | James Guy | Great Britain | + 1.08″ |
| 4 | Joseph Schooling | Singapore | + 1.13″ |
| 5 |  Kristóf Milák | Hungary | + 1.15″ |
| 6 |  Chad Le Clos | South Africa | + 1.2″ |
| 7 |  Mehdy Metella | France | + 1.38″ |
| 8 | Henrique Martins | Brazil | + 1.4″ |
| 9 |  Konrad Czerniak | Poland | + 1.42″ |
| 10 | László Cseh | Hungary | + 1.47″ |
| 11 | Zhuhao Li | China | + 1.54″ |
| 12 | Grant Irvine | Australia | + 1.59″ |
| 13 | Jan Switkowski | Poland | + 1.74″ |
| 14 | Aleksandr Popkov | Russia | + 1.76″ |
| 15 |  David Morgan | Australia | + 1.82″ |
| 16 | Tim Phillips | United States | + 1.88″ |
| 17 | Mathys Goosen | Netherlands | + 2.04″ |
| 18 | Zheng Wen Quah | Singapore | + 2.05″ |
| 19 | Szebasztián Szabó | Serbia | + 2.08″ |
| 20 | Yuki Kobori | Japan | + 2.09″ |
| 21 | Luis Carlos Martinez | Guatemala | + 2.1″ |
| 22 |  Marius Kusch | Germany | + 2.14″ |
| 23 | Daniil Pakhomov | Russia | + 2.39″ |
| 24 | Kaan Turker Ayar | Turkey | + 2.44″ |
| 25 | Santiago Grassi | Argentina | + 2.51″ |
| 26 |  Jan Šefl | Czech Republic | + 2.57″ |
| 27 | Louis Croenen | Belgium | + 2.66″ |
| 28 | Dylan Carter | Trinidad & Tobago | + 2.67″ |
| 29 | Pavel Sankovich | Belarus | + 2.79″ |
| 30 |  Andreas Vazaios | Greece | + 2.8″ |
| 31 | Artyom Kozlyuk | Uzbekistan | + 2.87″ |
| 32 | Liubomyr Lemeshko | Ukraine | + 2.89″ |
| 33 | Viktor Bromer | Denmark | + 2.93″ |
| 34 | Josiah Binnema | Canada | + 3.02″ |
| 35 |  Giacomo Carini | Italy | + 3.05″ |
| 36 | Marcus Schlesinger | Israel | + 3.12″ |
| 37 | Adilbek Mussin | Kazakhstan | + 3.29″ |
| 38 |  Nils Liess | Switzerland | + 3.42″ |
| 39 | Benjamín Hockin | Paraguay | + 3.43″ |
| 40 | Riku Pöytäkivi | Finland | + 3.54″ |
| 41 | Triady Fauzi Sidiq | Indonesia | + 3.58″ |
| 41 | Antani Ivanov | Bulgaria | + 3.58″ |
| 43 | Kregor Zirk | Estonia | + 3.62″ |
| 44 |  Brendan Hyland | Ireland | + 3.72″ |
| 45 | Marcos Lavado | Venezuela | + 3.89″ |
| 45 | Tadas Duškinas | Lithuania | + 3.89″ |
| 47 | Wei-Liang Chou | Chinese Taipei | + 4.23″ |
| 48 | Sajan Prakash | India | + 4.38″ |
| 49 | David Arias Gonzalez | Colombia | + 4.4″ |
| 50 | José Martínez | Mexico | + 4.42″ |
| 51 | Omar Eissa | Egypt | + 4.51″ |
| 52 | Quy Phuoc Hoang | Vietnam | + 4.68″ |
| 53 | Ralph Goveia | Zambia | + 4.78″ |
| 54 | Christian Sperandio | Dominican Republic | + 4.9″ |
| 55 | Cherantha De Silva | Sri Lanka | + 5.01″ |
| 56 | Mehdi Ansari | Iran | + 5.23″ |
| 57 | Mikhail Umnov | Malta | + 5.5″ |
| 58 | Rami Anis | + 5.58″ | |
| 59 | Bryan Álvarez | Costa Rica | + 5.77″ |
| 60 | Ayman Klzie | Syria | + 6.51″ |
| 61 | Jeerakit Soammanus | Thailand | + 6.8″ |
| 62 | Oumar Toure | Mali | + 7.44″ |
| 63 | Ifeakachuku Nmor | Nigeria | + 7.82″ |
| 64 | Abdullah Ahmad Naji Al-Doori | Iraq | + 7.93″ |
| 65 | George Jabbour | Honduras | + 8.21″ |
| 66 | Yacob Al-Khulaifi | Qatar | + 8.34″ |
| 67 | Hannibal Gaskin | Guyana | + 8.61″ |
| 68 | Daniel Francisco | Angola | + 8.71″ |
| 69 | Tanner Poppe | Guam | + 13.2″ |
| 70 | Simanga Dlamini | Eswatini | + 13.94″ |
| 71 | David Roberto | Northern Mariana Islands | + 16.72″ |
| 72 | Dillon Gooding | St. Vincent & the Grenadines | + 17.03″ |
| Sam Perry | New Zealand | DNS |