| 2023 Sparkassen ATP Challenger | |
|---|---|
| Date | 23–29 October |
| Edition | 14th |
| Surface | Hard (indoor) |
| Location | Ortisei, Italy |
| Champions | |
| Singles | |
 Lukáš Klein | |
| Doubles | |
 Andrew Paulson / Patrik Rikl | |
The 2023 Sparkassen ATP Challenger was a professional tennis tournament played on indoor hard courts in Ortisei, Italy between 23 and 29 October 2023. It was the 14th edition of the tournament and was part of the 2023 ATP Challenger Tour.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 JOR | Abdullah Shelbayh | 212 | 1 |
 BEL | Gauthier Onclin | 214 | 2 |
 ITA | Federico Gaio | 217 | 3 |
| ITA | Francesco Maestrelli | 218 | 4 |
 EST | Mark Lajal | 229 | 5 |
 ESP | Alejandro Moro Cañas | 233 | 6 |
| ITA | Stefano Napolitano | 239 | 7 |
 UKR | Illya Marchenko | 248 | 8 |
The following players received wildcards into the singles main draw:
Lorenzo Carboni Francesco Forti Lorenzo Rottoli The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Hynek Bartoň 
Mirza Bašić Luca Giacomini Daniil Glinka Lukáš Klein 
Ryan Nijboer Lukáš Klein def. 
Maks Kaśnikowski 6–7(4–7), 7–6(7–4), 7–6(8–6). Andrew Paulson / Patrik Rikl def. 
Maximilian Neuchrist / 
Jakub Paul 4–6, 7–6(9–7), [11–9].