Heats
dimanche 18 août 2019, 16h22 GMT – 16h22 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Danielle Williams | Jamaica | 12.53″ |
| 2 | Tobi Amusan | Nigeria | + 0.18″ |
| 3 | Brianna McNeal | United States | + 0.19″ |
| 4 | Nia Ali | United States | + 0.28″ |
| 5 | Payton Chadwick | United States | + 0.33″ |
| 6 | Janeek Brown | Jamaica | + 0.35″ |
| 7 |  Kendra Harrison | United States | + 0.4″ |
| 8 | Tiffani McReynolds | United States | + 0.43″ |
| 9 |  Nadine Visser | Netherlands | + 0.44″ |
| 10 |  Megan Tapper | Jamaica | + 0.54″ |
| 11 | Christina Clemons | United States | + 0.56″ |
| 12 | Cindy Sember | Great Britain | + 0.62″ |
| 13 | Yanique Thompson | Jamaica | + 0.66″ |
| 14 | Heather Paton | Great Britain | + 0.72″ |
| 15 | Queen Claye | United States | + 0.74″ |
| 16 | Alicia Barrett | Great Britain | + 1.11″ |