| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* | WIND | 
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1403 | Kendra HARRISON |  USA | 12.33 Q | +0.5 | |
| 2 | 1 | 3 | 1249 | Jasmine CAMACHO-QUINN |  PUR | 12.41 Q | -0.4 | |
| 3 | 2 | 1 | 544 | Devynne CHARLTON |  BAH | 12.49 Q | .484 | +0.5 | 
| 4 | 2 | 3 | 1371 | Nia ALI |  USA | 12.49 Q | .486 | -0.4 | 
| 5 | 3 | 3 | 1036 | Danielle WILLIAMS |  JAM | 12.50 q SB | .498 | -0.4 | 
| 6 | 3 | 1 | 1301 | Ditaji KAMBUNDJI |  SUI | 12.50 q | .500 | +0.5 | 
| 7 | 4 | 1 | 1029 | Megan TAPPER |  JAM | 12.55 | +0.5 | |
| 8 | 1 | 2 | 1159 | Tobi AMUSAN |  NGR | 12.56 Q | -0.7 | |
| 9 | 2 | 2 | 1022 | Ackera NUGENT |  JAM | 12.60 Q | -0.7 | |
| 10 | 3 | 2 | 1157 | Nadine VISSER |  NED | 12.62 SB | .618 | -0.7 | 
| 11 | 5 | 1 | 963 | Sarah LAVIN |  IRL | 12.62 NR | .619 | +0.5 | 
| 12 | 4 | 3 | 1224 | Pia SKRZYSZOWSKA |  POL | 12.71 | -0.4 | |
| 13 | 4 | 2 | 932 | Luca KOZÁK |  HUN | 12.73 | -0.7 | |
| 14 | 5 | 3 | 521 | Michelle JENNEKE |  AUS | 12.80 | -0.4 | |
| 15 | 6 | 3 | 1261 | Marione FOURIE |  RSA | 12.89 | -0.4 | |
| 16 | 7 | 3 | 700 | Mette GRAVERSGAARD |  DEN | 12.94 | -0.4 | |
| 17 | 5 | 2 | 830 | Cyréna SAMBA-MAYELA |  FRA | 12.95 | -0.7 | |
| 18 | 6 | 1 | 866 | Cindy SEMBER |  GBR | 12.97 | .962 | +0.5 | 
| 19 | 6 | 2 | 530 | Celeste MUCCI |  AUS | 12.97 | .963 | -0.7 | 
| 20 | 8 | 3 | 611 | Michelle HARRISON |  CAN | 13.05 | .042 | -0.4 | 
| 21 | 7 | 2 | 783 | Reetta HURSKE |  FIN | 13.05 | .043 | -0.7 | 
| 22 | 7 | 1 | 1151 | Maayke TJIN-A-LIM |  NED | 13.05 | .049 | +0.5 | 
| 23 | 8 | 1 | 685 | Natalia CHRISTOFI |  CYP | 13.15 | +0.5 | |
| 2 | 1437 | Masai RUSSELL |  USA | DNF | 
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second