# 2023 Challenger Banque Nationale de Saguenay – Singles

Karman Thandi is the defending champion but chose not to participate.
Katherine Sebov won the title, defeating Fanny Stollár in the final, 6–4, 6–4.

## Seeds

* Katherine Sebov (champion)
* Arina Rodionova (semifinals)
* Lesley Pattinama Kerkhove (first round)
* Haruka Kaji (first round)
* Lulu Sun (withdrew)
* Justina Mikulskytė (quarterfinals)
* Marina Stakusic (second round)
* Fanny Stollár (final)

## 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 |
| 1 | Katherine Sebov | 6 | 6 | | | | | |
| WC | Isabelle Boulais | 1 | 0 | | | | | |
| WC | Isabelle Boulais | 1 | 0 | | 1 | Katherine Sebov | 6 | 6 |
| | | | | | 8 | Fanny Stollár | 4 | 4 |
| 8 | Fanny Stollár | 2 | 6 | 6 | 8 | Fanny Stollár | 4 | 4 |
| 2 | Arina Rodionova | 6 | 1 | 3 | | | | |

### Top half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | K Sebov | 7 | 6 | | | | | | | | | | | | | |
| Q | N Sengphrachanh | 5 | 2 | 1 | K Sebov | 6 | 6 | | | | | | | | | |
| WC | R Verma | 1 | 4 | Q | S Nicholson | 4 | 3 | | | | | | | | | |
| Q | S Nicholson | 6 | 6 | | | | | | 1 | K Sebov | 6 | 6 | | | | |
| | V Mboko | 6 | 7$^7$ | | | | | | | V Mboko | 2 | 4 | | | | |
| | E Silva | 4 | 6$^5$ | | V Mboko | 4 | 6 | 6 | | | | | | | | |
| | N Hanatani | 3 | 5 | 7 | M Stakusic | 6 | 4 | 3 | | | | | | | | |
| 7 | M Stakusic | 6 | 7 | | | | | | | | | | 1 | K Sebov | 6 | 6 |
| 4 | H Kaji | 2 | 4 | | | | | | | | | | WC | I Boulais | 1 | 0 |
| | D Hewitt | 6 | 6 | | D Hewitt | 3 | 3 | | | | | | | | | |
| | M Sieg | 6 | 6 | | M Sieg | 6 | 6 | | | | | | | | | |
| LL | J Jebawy | 2 | 2 | | | | | | | M Sieg | 3 | 6$^7$ | | | | |
| Q | A Zhu | 4 | 2 | | | | | | WC | I Boulais | 6 | 7$^9$ | | | | |
| | SB Grey | 6 | 6 | | SB Grey | 6 | 4 | 6$^2$ | | | | | | | | |
| WC | I Boulais | 6 | 6 | WC | I Boulais | 4 | 6 | 7$^7$ | | | | | | | | |
| Q | A Ulyashchenko | 3 | 2 | | | | | | | | | | | | | |

### 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 |
| 8 | F Stollár | 7$^7$ | 2 | 6 | | | | | | | | | | | | | | | |
| Q | C Campana | 6$^3$ | 6 | 3 | 8 | F Stollár | 6 | 7$^{10}$ | | | | | | | | | | | |
| | U Radwańska | 6 | 4 | 7 | | U Radwańska | 3 | 6$^8$ | | | | | | | | | | | |
| | C Brace | 2 | 6 | 5 | | | | | | 8 | F Stollár | 6$^5$ | 6 | 6 | | | | | |
| Q | P Corley | 4 | 4 | | | | | | | | R Anderson | 7$^7$ | 1 | 3 | | | | | |
| | K Kozarov | 6 | 6 | | | K Kozarov | 3 | 7$^{10}$ | 0 | | | | | | | | | | |
| | R Anderson | 6 | 4 | 6 | | R Anderson | 6 | 6$^8$ | 6 | | | | | | | | | | |
| 3 | L Pattinama Kerkhove | 4 | 6 | 3 | | | | | | | | | | | 8 | F Stollár | 2 | 6 | 6 |
| 6 | J Mikulskytė | 6 | 6 | | | | | | | | | | | | 2 | A Rodionova | 6 | 1 | 3 |
| WC | M Kupres | 3 | 2 | | 6 | J Mikulskytė | 6 | 6 | | | | | | | | | | | |
| WC | N Lagaev | 6 | 6 | | WC | N Lagaev | 4 | 0 | | | | | | | | | | | |
| Q | L Kwong | 0 | 2 | | | | | | | 6 | J Mikulskytė | 1 | 4 | | | | | | |
| | C Roméo | 3 | 6 | 7 | | | | | | 2 | A Rodionova | 6 | 6 | | | | | | |
| Q | L Sleeth | 6 | 3 | 5 | | C Roméo | 4 | 4 | | | | | | | | | | | |
| | J Svendsen | 6 | 3 | 4 | 2 | A Rodionova | 6 | 6 | | | | | | | | | | | |
| 2 | A Rodionova | 1 | 6 | 6 | | | | | | | | | | | | | | | |