The 2019 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 20th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Bratislava, Slovakia between 4 and 10 November 2019.

Singles main-draw entrants

Seeds

CountryPlayerRank1Seed
KAZMikhail Kukushkin671
HUNMárton Fucsovics692
ITAStefano Travaglia883
POLKamil Majchrzak904
BIHDamir Džumhur915
AUSAlexei Popyrin956
ITASalvatore Caruso967
RSALloyd Harris1038
BLREgor Gerasimov1049
FRAAntoine Hoang10710
SVKNorbert Gombos10911
GERYannick Maden11612
GERPeter Gojowczyk11813
CZEJiří Veselý11914
ITAGianluca Mager12015
SWEElias Ymer12316
  • 1 Rankings are as of 28 October 2019.

Other entrants

The following players received wildcards into the singles main draw:

The following player received entry into the singles main draw as an alternate:

The following players received entry from the qualifying draw:

Champions

Singles

Doubles