| | Event type
100 metres Hurdles, Girls
| Date | 11 – 14 October 2018 | |
|---|---|---|
| Status | YOG | |
| Location | Athletics Field, Parque Olímpico de la Juventud, Villa Soldati, Buenos Aires | |
| Participants | 20 from 20 countries | |
| Format | Two stages with final results determined by cumulative time. | |
| Pos | Nr | Athlete | NOC | Time | Stage One | Stage Two | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 | – | Grace Stark |  USA | 26.14 | 13.31 (1) | 12.83 (1) | Gold | ||
| 2 | – | Sophie White |  AUS | 26.40 | 13.39 (2) | 13.01 (3) | Silver | ||
| 3 | – | Ackera Nugent |  JAM | 26.41 | 13.45 (3) | 12.96 (2) | Bronze | ||
| 4 | – | Johanna Plank |  AUT | 27.11 | 13.71 (4) | 13.40 (4) | |||
| 5 | – | Lin Ting-Wei |  TPE | 27.26 | 13.79 (5) | 13.47 (5) | |||
| 6 | – | Keily Pérez |  CUB | 27.45 | 13.96 (6) | 13.49 (6) | |||
| 7 | – | Angèle Pitz |  FRA | 27.75 | 13.98 (=7) | 13.77 (10) | |||
| 8 | – | María Patrón |  MEX | 27.82 | 14.14 (12) | 13.68 (7) | |||
| 9 | – | Aimara Nazareno |  ECU | 27.83 | 14.10 (=10) | 13.73 (8) | |||
| 10 | – | Antonia Buschendorf |  GER | 27.91 | 14.16 (13) | 13.75 (9) | |||
| 11 | – | Kayla van der Bergh |  RSA | 28.23 | 14.10 (=10) | 14.13 (13) | |||
| 12 | – | Sarah Belle |  BAR | 28.38 | 14.06 (9) | 14.32 (16) | |||
| 13 | – | Viktoryia Kharavitskaya |  BLR | 28.40 | 14.39 (14) | 14.01 (12) | |||
| 14 | – | Ditaji Kambundji |  SUI | 28.42 | 13.98 (=7) | 14.44 (17) | |||
| 15 | – | Fanni Bacsa |  HUN | 28.53 | 14.64 (17) | 13.89 (11) | |||
| 16 | – | Elīza Kraule |  LAT | 28.59 | 14.45 (15) | 14.14 (=14) | |||
| 17 | – | Monika Romaszko |  POL | 28.63 | 14.49 (16) | 14.14 (=14) | |||
| 18 | – | Isabel Velasco |  ESP | 31.09 | 15.31 (18) | 15.78 (18) | |||
| – | Bianca Toader |  ROU | – | 18.95 (19) | – ( | ||||
| – | Olivia Gee |  CAN | – | – ( | – ( | ||||
| – | Daniela Mena |  COL | – | – ( | – ( |