| 2019 Banja Luka Challenger | |
|---|---|
| Date | 9–15 September |
| Edition | 18th |
| Surface | Clay |
| Location | Banja Luka, Bosnia and Herzegovina |
| Champions | |
| Singles | |
 Tallon Griekspoor | |
| Doubles | |
 Sadio Doumbia / Fabien Reboul | |
The 2019 Banja Luka Challenger was a professional tennis tournament played on clay courts. It was the eighteenth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Banja Luka, Bosnia and Herzegovina from 9 to 15 September 2019.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| NED | Robin Haase | 143 | 1 |
 ITA | Filippo Baldi | 146 | 2 |
 SRB | Nikola Milojević | 148 | 3 |
 ARG | Federico Coria | 157 | 4 |
 SVK | Filip Horanský | 189 | 5 |
 IND | Sumit Nagal | 190 | 6 |
| NED | Tallon Griekspoor | 194 | 7 |
| ARG | Carlos Berlocq | 199 | 8 |
 BRA | Rogério Dutra Silva | 200 | 9 |
| SRB | Peđa Krstin | 210 | 10 |
| ARG | Andrea Collarini | 219 | 11 |
 AUS | Christopher O'Connell | 221 | 12 |
 KAZ | Dmitry Popko | 236 | 13 |
 CHI | Alejandro Tabilo | 238 | 14 |
| SRB | Danilo Petrović | 247 | 15 |
| ARG | Facundo Mena | 266 | 16 |
The following players received wildcards into the singles main draw:
Filip Krolo
Nemanja Malešević Nikola Milojević 
Matija Pecotić Goran RadanovićThe following player received entry into the singles main draw as an alternate:
Jaume Pla MalfeitoThe following players received entry from the qualifying draw:
Tallon Griekspoor def. Sumit Nagal 6–2, 6–3. Sadio Doumbia / Fabien Reboul def. 
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