# 2024 Open Quimper Bretagne – Singles

Grégoire Barrère was the defending champion but lost in the first round to Otto Virtanen.
Pierre-Hugues Herbert won the title after defeating Duje Ajduković 6–3, 6–2 in the final.

## Seeds

* Grégoire Barrère (first round)
* Arthur Rinderknech (quarterfinals)
* Hugo Gaston (withdrew)
* Constant Lestienne (first round)
* Michael Mmoh (first round)
* Maxime Cressy (quarterfinals)
* Vít Kopřiva (second round)
* Gabriel Diallo (second round)
* Duje Ajduković (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 | Final | Final | Final | Final |
| | Harold Mayot | 6$^5$ | 3 | | | | |
| 9 | Duje Ajduković | 7$^7$ | 6 | | | | |
| 9 | Duje Ajduković | 7$^7$ | 6 | 9 | Duje Ajduković | 3 | 2 |
| | | | | Alt | Pierre-Hugues Herbert | 6 | 6 |
| WC | Matteo Martineau | 6$^4$ | 4 | Alt | Pierre-Hugues Herbert | 6 | 6 |
| Alt | Pierre-Hugues Herbert | 7$^7$ | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | G Barrère | 5 | 4 | | | | | | | | | | | | | | |
| | O Virtanen | 7 | 6 | | | O Virtanen | 1 | 4 | | | | | | | | | |
| WC | M Guinard | 5 | 5 | | | K Jacquet | 6 | 1$^r$ | | | | | | | | | |
| | K Jacquet | 7 | 7 | | | | | | | O Virtanen | | | | | | | |
| | H Mayot | 4 | 6 | 6 | | | | | | H Mayot | w/o | | | | | | |
| | F Misolic | 6 | 1 | 4 | | H Mayot | 7$^7$ | 7$^7$ | | | | | | | | | |
| | E Ymer | 5 | 2 | | 8 | G Diallo | 6$^3$ | 6$^1$ | | | | | | | | | |
| 8 | G Diallo | 7 | 6 | | | | | | | | | | | | H Mayot | 6$^5$ | 3 |
| 9 | D Ajduković | 6 | 7$^8$ | | | | | | | | | | | 9 | D Ajduković | 7$^7$ | 6 |
| | C Hemery | 4 | 6$^6$ | | 9 | D Ajduković | 7$^7$ | 6 | | | | | | | | | |
| Alt | A Dougaz | 5 | 7$^7$ | 6 | Alt | A Dougaz | 6$^3$ | 2 | | | | | | | | | |
| Q | Samuel Vincent Ruggeri | 7 | 6$^4$ | 4 | | | | | 9 | D Ajduković | 6 | 3 | 7 | | | | |
| Q | Émilien Voisin | 6 | 3 | 2 | | | | | 6 | M Cressy | 4 | 6 | 5 | | | | |
| Q | R Berankis | 4 | 6 | 6 | Q | R Berankis | 3 | 5 | | | | | | | | | |
| Alt | G Blancaneaux | 6 | 4 | 2 | 6 | M Cressy | 6 | 7 | | | | | | | | | |
| 6 | M Cressy | 3 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | V Kopřiva | 6 | 6 | | | | | | | | | | | | | | |
| WC | L Pouille | 2 | 4 | | 7 | V Kopřiva | 5 | 4 | | | | | | | | | |
| WC | M Martineau | 3 | 6 | 7$^7$ | WC | M Martineau | 7 | 6 | | | | | | | | | |
| | G Mpetshi Perricard | 6 | 4 | 6$^3$ | | | | | | WC | M Martineau | 6 | 7$^7$ | | | | |
| Q | M Bourgue | 7$^7$ | 6 | | | | | | | Q | M Bourgue | 3 | 6$^5$ | | | | |
| | G Brouwer | 6$^5$ | 4 | | Q | M Bourgue | 4 | 7$^7$ | 6 | | | | | | | | |
| | B Harris | 7$^7$ | 7$^7$ | | | B Harris | 6 | 6$^5$ | 3 | | | | | | | | |
| 4 | C Lestienne | 6$^4$ | 6$^2$ | | | | | | | | | | | WC | M Martineau | 6$^4$ | 4 |
| 5 | M Mmoh | 6$^7$ | 5 | | | | | | | | | | | Alt | P-H Herbert | 7$^7$ | 6 |
| Alt | P-H Herbert | 7$^9$ | 7 | | Alt | P-H Herbert | 7$^8$ | 7 | | | | | | | | | |
| LL | T Lamasine | 6 | 6$^5$ | 6 | LL | T Lamasine | 6$^6$ | 5 | | | | | | | | | |
| Q | M Echargui | 4 | 7$^7$ | 3 | | | | | | Alt | P-H Herbert | 7$^7$ | 6 | | | | |
| | D Kuzmanov | 4 | 6 | 6 | | | | | | 2 | A Rinderknech | 6$^5$ | 3 | | | | |
| Q | D Added | 6 | 0 | 3 | | D Kuzmanov | 4 | 7$^8$ | 5 | | | | | | | | |
| | U Blanchet | 4 | 4 | | 2 | A Rinderknech | 6 | 6$^6$ | 7 | | | | | | | | |
| 2 | A Rinderknech | 6 | 6 | | | | | | | | | | | | | | |