| 2023 Split Open | |
|---|---|
| Date | 10–16 April |
| Edition | 5th |
| Surface | Clay |
| Location | Split, Croatia |
| Champions | |
| Singles | |
 Zsombor Piros | |
| Doubles | |
 Sadio Doumbia / Fabien Reboul | |
The 2023 Split Open was a professional tennis tournament played on clay courts. It was part of the 2023 ATP Challenger Tour. It took place in Split, Croatia between 10 and 16 April 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUS
|
Christopher O'Connell | 87 | 1 |
 AUT
|
Jurij Rodionov | 120 | 2 |
 SVK
|
Norbert Gombos | 130 | 3 |
| HUN
|
Fábián Marozsán | 133 | 4 |
| SVK
|
Lukáš Klein | 139 | 5 |
| AUT
|
Filip Misolic | 146 | 6 |
 ITA
|
Mattia Bellucci | 154 | 7 |
 JPN
|
Kaichi Uchida | 162 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Zsombor Piros def. Norbert Gombos 7–6(7–2), 7–6(11–9). Sadio Doumbia / Fabien Reboul def. 
Anirudh Chandrasekar / Vijay Sundar Prashanth 6–4, 6–4.
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