Sun Yiwen is a fencer who has competed for China. She competed at the 2016 and 2020 Summer Olympic Games.
Olympic Results[]
| Year | Event | Result |
|---|---|---|
| 2016 | Women's individual épée | 
|
| Women's team épée | 
| |
| 2020 | Women's individual épée | 
|
| Women's team épée | 4th |
2016[]
| Discipline | Stage | Opponent | Result |
|---|---|---|---|
| Individual épée | Round 1 | Bye | |
| Round 2 |  Gbahi Gwladys Sakoa
|
15 – 11 | |
| Round 3 |  Irina Embrich
|
15 – 12 | |
| Quarterfinal |  Sarra Besbes
|
14 – 11 | |
| Semifinal |  Rossella Fiamingo
|
11 – 12 | |
| 3rd place |  Lauren Rembi
|
15 – 13 | |
| Team épée | Quarterfinal | Ukraine | 42 – 34 |
| Semifinal | Estonia | 45 – 36 | |
| Final | Romania | 38 – 44 | |
2020[]
| Discipline | Stage | Opponent | Result |
|---|---|---|---|
| Individual épée | Round 1 | Bye | |
| Round 2 |  Malika Khakimova
|
15 – 10 | |
| Round 3 |  Zhu Mingye
|
15 – 8 | |
| Quarterfinal | Federica Isola
|
11 – 10 | |
| Semifinal |  Aizanat Murtazaeva
|
12 – 8 | |
| Final |  Ana Maria Popescu
|
11 – 10 | |
| Team épée | Quarterfinal | Hong Kong | 44 – 32 |
| Semifinal | South Korea | 29 – 38 | |
| 3rd place | Italy | 21 – 23 | |
| Fencing 2020 • Women's team épée
|
|---|
| Lin Sheng |
| Sun Yiwen |
| Xu Anqi |
| Zhu Mingye |