| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3042 | Tobi AMUSAN |  NGR | 12.62 Q | 0.148 | 
| 2 | 1128 | Devynne CHARLTON |  BAH | 12.66 Q | 0.134 | 
| 3 | 1563 | Andrea Carolina VARGAS |  CRC | 12.69 SB | 0.139 | 
| 4 | 3834 | Christina CLEMONS |  USA | 12.76 | 0.118 | 
| 5 | 3179 | Klaudia SICIARZ |  POL | 12.84 SB | 0.146 | 
| 6 | 2679 | Asuka TERADA |  JPN | 13.06 | 0.163 | 
| 2266 | Luca KOZÁK |  HUN | DNF | 0.164 | |
| 2520 | Yanique THOMPSON |  JAM | DNF | 0.145 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | ms* | Reaction Time | 
|---|---|---|---|---|---|---|
| 1 | 2457 | Britany ANDERSON |  JAM | 12.40 Q PB | 0.166 | |
| 2 | 3852 | Kendra HARRISON |  USA | 12.51 Q | 0.153 | |
| 3 | 1051 | Liz CLAY |  AUS | 12.71 PB | 0.142 | |
| 4 | 2382 | Luminosa BOGLIOLO |  ITA | 12.75 NR | 0.143 | |
| 5 | 2022 | Tiffany PORTER |  GBR | 12.86 | 0.150 | |
| 6 | 3180 | Pia SKRZYSZOWSKA |  POL | 12.89 | 0.128 | |
| 7 | 2260 | Mulern JEAN |  HAI | 13.09 | .088 | 0.156 | 
| 8 | 1133 | Pedrya SEYMOUR |  BAH | 13.09 | .090 | 0.185 | 
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 3248 | Jasmine CAMACHO-QUINN |  PUR | 12.26 Q OR | 0.175 | 
| 2 | 2518 | Megan TAPPER |  JAM | 12.62 Q | 0.155 | 
| 3 | 3011 | Nadine VISSER |  NED | 12.63 q SB | 0.156 | 
| 4 | 3840 | Gabriele CUNNINGHAM |  USA | 12.67 q | 0.165 | 
| 5 | 1232 | Elvira HRABARENKA |  BLR | 12.71 | 0.129 | 
| 6 | 2847 | Ebony MORRISON |  LBR | 12.74 NR | 0.144 | 
| 7 | 2026 | Cindy SEMBER |  GBR | 12.76 | 0.163 | 
| 8 | 1187 | Anne ZAGRÉ |  BEL | 12.78 SB | 0.153 |