Heats
samedi 20 juillet 2019, 16h29 GMT – 16h29 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Danielle Williams | Jamaica | 12.41″ |
| 2 |  Megan Tapper | Jamaica | + 0.22″ |
| 3 | Nia Ali | United States | + 0.26″ |
| 4 | Tobi Amusan | Nigeria | + 0.33″ |
| 5 | Queen Claye | United States | + 0.39″ |
| 6 | Tiffani McReynolds | United States | + 0.41″ |
| 7 |  Elvira Herman | Belarus | + 0.45″ |
| 8 |  Pedrya Seymour | Bahamas | + 0.51″ |
| 9 |  Nadine Visser | Netherlands | + 0.54″ |
| 10 | Evonne Britton | United States | + 0.54″ |
| 11 | Yanique Thompson | Jamaica | + 0.55″ |
| 12 | Nooralotta Neziri | Finland | + 0.56″ |
| 13 | Cindy Roleder | Germany | + 0.64″ |
| 14 | Cindy Sember | Great Britain | + 0.83″ |
| 15 | Yasmin Miller | Great Britain | + 1.1″ |
| Alicia Barrett | Great Britain | DQ | |
| Jasmine Camacho-Quinn | Puerto Rico | DQ | |
| Celeste Mucci | Australia | DNS |