| 2026 Split Open | |
|---|---|
| Date | 23–29 March 2026 |
| Edition | 7th |
| Category | ATP Challenger Tour |
| Surface | Clay / Outdoor |
| Location | Split, Croatia |
| Champions | |
| Singles | |
 Mili Poljičak | |
| Doubles | |
 Miloš Karol / Mili Poljičak | |
The 2026 Split Open was a professional tennis tournament played on outdoor clay courts. It was the seventh edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Split, Croatia between 23 and 29 March 2026.
Champions
Singles
- Mili Poljičak def.
Tom Gentzsch 6–4, 6–4.
Doubles
- Miloš Karol / Mili Poljičak def.
Mirza Bašić / Andrej Nedić 6–2, 6–2.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| CRO
|
Matej Dodig | 214 | 1 |
 GBR
|
George Loffhagen | 222 | 2 |
 AUT
|
Lukas Neumayer | 227 | 3 |
| BIH
|
Nerman Fatić | 234 | 4 |
 POR
|
Frederico Ferreira Silva | 238 | 5 |
 BEL
|
Kimmer Coppejans | 244 | 6 |
| GER
|
Tom Gentzsch | 248 | 7 |
| GBR
|
Felix Gill | 252 | 8 |
- Rankings are as of 16 March 2026.1
Other entrants
The following players received wildcards into the singles main draw:
- Emanuel Ivanišević
- Mili Poljičak
- Josip Šimundža
The following player received entry into the singles main draw through the Junior Accelerator programme:
The following players received entry into the singles main draw as alternates:
Kilian Feldbausch
Christian Langmo
The following players received entry from the qualifying draw:
Gerard Campaña Lee
Ergi Kırkın
Oleksii Krutykh
Juan Cruz Martin Manzano- Adrian Oetzbach
- Filippo Romano