| | Top level | Event type
Shortboard, Women – Quarter-Finals
| Date | 27 July 2021 — 9:24 | |
|---|---|---|
| Location | Tsurigasaki Surfing Beach, Torami, Chiba | |
| Format | Winners advance to semi-finals. | |
| Head Judge | Glen Elliott |  AUS |
| Head Judge | Richard Pierce |  USA |
| Judge 1 | Luiz Pereira |  BRA |
| Judge 2 | Dan Kosoof |  NZL |
| Judge 3 | Tory Gilkerson | USA |
| Judge 4 | Benjamin Lowe | AUS |
| Judge 5 | Bruno Truch |  FRA |
| Judge 6 | Masato Kato |  JPN |
| Judge 7 | Nuno Trigo |  POR |
Heat #1
| Time | 9:24 |
|---|
| Pos | Competitor | NOC | Points | Best Wave | Second-Best Wave | Wave 1 | Wave 2 | Wave 3 | Wave 4 | Wave 5 | Wave 6 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Bianca Buitendag |  RSA | 9.50 | 6.00 | 3.50 | 2.50 | 3.50 | 6.00 | 0.50 | 0.20 | – | ||
| 2 | Yolanda Hopkins | POR | 5.46 | 3.93 | 1.53 | 1.00 | 1.53 | 3.93 | 0.50 | 0.37 | – |
Heat #2
| Time | 10:00 |
|---|
| Pos | Competitor | NOC | Points | Best Wave | Second-Best Wave | Wave 1 | Wave 2 | Wave 3 | Wave 4 | Wave 5 | Wave 6 | Wave 7 | Wave 8 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Caroline Marks | USA | 12.50 | 6.83 | 5.67 | 0.37 | 6.83 | 0.43 | 0.70 | 3.50 | 5.67 | 0.37 | 0.43 | ||
| 2 | Brisa Hennessy |  CRC | 6.83 | 4.83 | 2.00 | 1.17 | 0.80 | 4.83 | 2.00 | – | – | – | – |
Heat #3
| Time | 10:36 |
|---|
| Pos | Competitor | NOC | Points | Best Wave | Second-Best Wave | Wave 1 | Wave 2 | Wave 3 | Wave 4 | Wave 5 | Wave 6 | Wave 7 | Wave 8 | Wave 9 | Wave 10 | Wave 11 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Carissa Moore | USA | 14.26 | 7.93 | 6.33 | 3.33 | 4.67 | 0.93 | 0.37 | 1.00 | 4.13 | 1.27 | 6.33 | 7.93 | 5.60 | 4.80 | ||
| 2 | Silvana Lima | BRA | 8.30 | 4.50 | 3.80 | 3.80 | 0.63 | 0.20 | 0.37 | 1.03 | 4.50 | 0.43 | – | – | – | – |
Heat #4
| Time | 11:12 |
|---|
| Pos | Competitor | NOC | Points | Best Wave | Second-Best Wave | Wave 1 | Wave 2 | Wave 3 | Wave 4 | Wave 5 | Wave 6 | Wave 7 | Wave 8 | Wave 9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Amuro Tsuzuki | JPN | 13.27 | 6.67 | 6.60 | 6.67 | 4.10 | 6.60 | 0.57 | – | – | – | – | – | ||
| 2 | Sally Fitzgibbons | AUS | 11.67 | 6.17 | 5.50 | 6.17 | 0.50 | 4.00 | 3.77 | 1.90 | 3.00 | 5.50 | 2.13 | 0.50 |