Qualification Summary
Each National Olympic Committee can enter a maximum of 8 competitors (8 women). Should a nation qualify a team of 8 athletes they will be eligible to compete in the duet event. As hosts, Japan was given the maximum quota to compete. The remaining quotas will be decided at various events, specifically the 2019 World Aquatics Championships, continental qualifiers and the 2020 Olympic Games Artistic Swimming Qualifying Event.
Qualified Nations
Qualification events are listed in hierarchical order.
Women’s Team
| Qualification Event | Places | Qualified Nations |
|---|---|---|
| Host Nation/Asian Qualifier | 1 |  Japan |
| 2019 European Champions Cup | 1 |  Russia |
| 2019 World Aquatic Championships African and Oceania Qualifier |
2 | |
| 2019 Pan American Games | 1 | |
| 2019 World Aquatic Championships | 2 | |
| 2020 Olympic Games Qualifying Event | 3 |
Women’s Duet
| Qualification Event | Places | Qualified Nations |
|---|---|---|
| Nations Qualified in Team Event | 10 | Japan Russia |
| 2019 European Champions Cup | 1 |  Ukraine |
| 2019 World Aquatic Championships African, Asian and Oceania Qualifier |
3 | |
| 2019 Pan American Games | 1 | |
| 2020 Olympic Games Qualifying Event | 7 |