# 2021 Internationaux Féminins de la Vienne – Singles

Nina Stojanović was the defending champion but chose to compete at the 2021 Torneig Internacional Els Gorchs instead.
Chloé Paquet won the title, defeating Simona Waltert in the final, 6–4, 6–3.

## Seeds

* Océane Dodin (quarterfinals)
* Harmony Tan (semifinals, retired)
* Tímea Babos (first round)
* Chloé Paquet (champion)
* Amandine Hesse (second round, retired)
* Mariam Bolkvadze (quarterfinals)
* Daria Snigur (second round)
* Julia Grabher (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Elsa Jacquemot | 3 | 4 | | | | | |
| | Simona Waltert | 6 | 6 | | | | | |
| | Simona Waltert | 6 | 6 | | | Simona Waltert | 4 | 3 |
| | | | | | 4 | Chloé Paquet | 6 | 6 |
| 4 | Chloé Paquet | 4 | 6 | 3 | 4 | Chloé Paquet | 6 | 6 |
| 2 | Harmony Tan | 6 | 4 | 2$^r$ | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | O Dodin | 4 | 6 | 6 | | | | | | | | | | | | | |
| Q | SB Grey | 6 | 2 | 2 | 1 | O Dodin | 6 | 6 | | | | | | | | | |
| | A Hartono | 3 | 6 | 6 | | A Hartono | 2 | 3 | | | | | | | | | |
| | L Gjorcheska | 6 | 3 | 3 | | | | | | 1 | O Dodin | 2 | 3 | | | | |
| WC | É Dartron | 5 | 7$^{10}$ | 5 | | | | | | | E Jacquemot | 6 | 6 | | | | |
| Q | A Barnett | 7 | 6$^8$ | 7 | Q | A Barnett | 4 | 4 | | | | | | | | | |
| | E Jacquemot | 5 | 6 | 6 | | E Jacquemot | 6 | 6 | | | | | | | | | |
| 8 | J Grabher | 7 | 3 | 4 | | | | | | | | | | | E Jacquemot | 3 | 4 |
| 3 | T Babos | 1 | 6$^4$ | | | | | | | | | | | | S Waltert | 6 | 6 |
| Q | A Albié | 6 | 7$^7$ | | Q | A Albié | 2 | 6 | 4 | | | | | | | | |
| | K von Deichmann | 1 | 6 | 6 | | K von Deichmann | 6 | 3 | 6 | | | | | | | | |
| | M Helgø | 6 | 2 | 3 | | | | | | | K von Deichmann | 4 | 7 | 3 | | | |
| | S Waltert | 6 | 6 | | | | | | | | S Waltert | 6 | 5 | 6 | | | |
| WC | K Marthiens | 0 | 1 | | | S Waltert | 6 | 4 | | | | | | | | | |
| Q | M Noël | 1 | 3 | | 5 | A Hesse | 1 | 0$^r$ | | | | | | | | | |
| 5 | A Hesse | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | M Bolkvadze | 6 | 6 | | | | | | | | | | | | | | | | |
| WC | L Jeanjean | 1 | 4 | | 6 | M Bolkvadze | 3 | 7$^8$ | 6 | | | | | | | | | | |
| | J Ponchet | 6 | 6 | | | J Ponchet | 6 | 6$^6$ | 2 | | | | | | | | | | |
| | S Nahimana | 1 | 3 | | | | | | | 6 | M Bolkvadze | 3 | 6 | 3 | | | | | |
| Q | A Monnot | 0 | 6 | 3 | | | | | | 4 | C Paquet | 6 | 3 | 6 | | | | | |
| Q | A Robbe | 6 | 4 | 6 | Q | A Robbe | 1 | 1 | | | | | | | | | | | |
| | S Murray Sharan | 2 | 3 | | 4 | C Paquet | 6 | 6 | | | | | | | | | | | |
| 4 | C Paquet | 6 | 6 | | | | | | | | | | | | 4 | C Paquet | 4 | 6 | 3 |
| 7 | D Snigur | 6 | 6 | | | | | | | | | | | | 2 | H Tan | 6 | 4 | 2$^r$ |
| | B Turati | 2 | 3 | | 7 | D Snigur | 1 | 6 | 2 | | | | | | | | | | |
| | R Șerban | 6 | 5 | 6 | | R Șerban | 6 | 2 | 6 | | | | | | | | | | |
| Q | V Muntean | 0 | 7 | 4 | | | | | | | R Șerban | 3 | 0 | | | | | | |
| Q | K Thandi | 5 | 5 | | | | | | | 2 | H Tan | 6 | 6 | | | | | | |
| WC | E Cascino | 7 | 7 | | WC | E Cascino | 5 | 3 | | | | | | | | | | | |
| | L Salden | 4 | 2 | | 2 | H Tan | 7 | 6 | | | | | | | | | | | |
| 2 | H Tan | 6 | 6 | | | | | | | | | | | | | | | | |