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.
Singles main-draw entrants
Seeds
1 Rankings are as of 26 August 2019.
Other entrants
The following players received wildcards into the singles main draw: Filip Krolo Nemanja Malešević Nikola Milojević Matija Pecotić Goran Radanović
The following player received entry into the singles main draw as an alternate: Jaume Pla Malfeito
The following players received entry from the qualifying draw: Fabien Reboul Matej Sabanov
Champions
Singles
Tallon Griekspoor def. Sumit Nagal 6–2, 6–3.
Doubles
Sadio Doumbia / Fabien Reboul def. Sergio Galdós / Facundo Mena 6–3, 7–6(7–4).