# 2023 Ilkley Trophy – Men's singles

Zizou Bergs was the defending champion but lost in the second round to Denis Kudla.
Jason Kubler won the title after defeating Sebastian Ofner 6–4, 6–4 in the final.

## Seeds

* Nuno Borges (first round)
* Alex Molčan (withdrew)
* Sebastian Ofner (final)
* Jason Kubler (champion)
* Jurij Rodionov (first round)
* Dominic Stricker (first round, retired)
* Aleksandar Kovacevic (first round)
* Yosuke Watanuki (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 |
| SE | Arthur Cazaux | 6 | 3 | 1 | | | | |
| 4 | Jason Kubler | 4 | 6 | 6 | | | | |
| 4 | Jason Kubler | 4 | 6 | 6 | 4 | Jason Kubler | 6 | 6 |
| | | | | | 3 | Sebastian Ofner | 4 | 4 |
| 3 | Sebastian Ofner | 6 | 6 | | 3 | Sebastian Ofner | 4 | 4 |
| | Zsombor Piros | 3 | 0 | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | N Borges | 6 | 3 | 4 | | | | | | | | | | | | | | |
| | TA Tirante | 4 | 6 | 6 | | TA Tirante | 1 | 1$^r$ | | | | | | | | | | |
| | G Diallo | 3 | 6$^1$ | | SE | A Cazaux | 6 | 3 | | | | | | | | | | |
| SE | A Cazaux | 6 | 7$^7$ | | | | | | | SE | A Cazaux | 6 | 1 | | | | | |
| LL | S Shimabukuro | 6 | 6$^2$ | 6 | | | | | | LL | S Shimabukuro | 1 | 0$^r$ | | | | | |
| WC | Harry Wendelken | 2 | 7$^7$ | 2 | LL | S Shimabukuro | 3 | 6 | 6 | | | | | | | | | |
| | R Hijikata | 7$^{10}$ | 7 | | | R Hijikata | 6 | 4 | 3 | | | | | | | | | |
| 8 | Y Watanuki | 6$^8$ | 5 | | | | | | | | | | | SE | A Cazaux | 6 | 3 | 1 |
| 4 | J Kubler | 6 | 6$^3$ | 6 | | | | | | | | | | 4 | J Kubler | 4 | 6 | 6 |
| SE | A Ritschard | 3 | 7$^7$ | 3 | 4 | J Kubler | 4 | 6 | 6 | | | | | | | | | |
| Q | M Bellucci | 4 | 6 | 6 | Q | M Bellucci | 6 | 3 | 4 | | | | | | | | | |
| | L Klein | 6 | 4 | 4 | | | | | | 4 | J Kubler | 6 | 6 | | | | | |
| | E Gómez | 3 | 6$^2$ | | | | | | | Q | J Shang | 3 | 4 | | | | | |
| Q | J Shang | 6 | 7$^7$ | | Q | J Shang | 6 | 6$^1$ | 6 | | | | | | | | | |
| | D Goffin | 7 | 1 | | | D Goffin | 1 | 7$^7$ | 4 | | | | | | | | | |
| 6 | D Stricker | 5 | 3$^r$ | | | | | | | | | | | | | | | |

### 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 |
| 5 | J Rodionov | 6$^1$ | 6 | 1 | | | | | | | | | | | | | | |
| | Z Bergs | 7$^7$ | 4 | 6 | | Z Bergs | 2 | 5 | | | | | | | | | | |
| | D Kudla | 6 | 7$^7$ | | | D Kudla | 6 | 7 | | | | | | | | | | |
| Q | H Međedović | 3 | 6$^5$ | | | | | | | | D Kudla | 2 | 2 | | | | | |
| | O Virtanen | 7$^7$ | 7 | | | | | | | 3 | S Ofner | 6 | 6 | | | | | |
| | N Gombos | 6$^2$ | 5 | | | O Virtanen | 4 | 6 | 4 | | | | | | | | | |
| Q | L Lokoli | 3 | 2 | | 3 | S Ofner | 6 | 1 | 6 | | | | | | | | | |
| 3 | S Ofner | 6 | 6 | | | | | | | | | | | | 3 | S Ofner | 6 | 6 |
| 7 | A Kovacevic | 7$^{11}$ | 3 | 6$^7$ | | | | | | | | | | | | Z Piros | 3 | 0 |
| | Z Piros | 6$^9$ | 6 | 7$^9$ | | Z Piros | 6 | 1 | 6 | | | | | | | | | |
| WC | T Samuel | 6 | 6$^6$ | 5 | Q | A Bolt | 4 | 6 | 3 | | | | | | | | | |
| Q | A Bolt | 2 | 7$^8$ | 7 | | | | | | | Z Piros | 6$^3$ | 6 | 7$^7$ | | | | |
| | R Brancaccio | 6 | 6 | | | | | | | Q | C Broom | 7$^7$ | 3 | 6$^2$ | | | | |
| WC | J Monday | 3 | 3 | | | R Brancaccio | 1 | 4 | | | | | | | | | | |
| | G Brouwer | 6$^5$ | 2 | | Q | C Broom | 6 | 6 | | | | | | | | | | |
| Q | C Broom | 7$^7$ | 6 | | | | | | | | | | | | | | | |