The 2019 Gwangju Open was a professional tennis tournament played on hard courts. It was the 4th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Gwangju, South Korea between 13 and 19 May 2019.

Singles main-draw entrants

Seeds

CountryPlayerRank1Seed
LTURičardas Berankis951
UKRSergiy Stakhovsky1142
CANBrayden Schnur1173
RUSEvgeny Donskoy1284
TPEJason Jung1295
KORKwon Soon-woo1356
SVKLukáš Lacko1517
JPNTatsuma Ito1608
BELRuben Bemelmans1639
JPNYūichi Sugita18110
AUSMax Purcell23611
ISRDudi Sela23912
CHNLi Zhe24313
JPNKaichi Uchida24514
KORLee Duck-hee24715
INDSaketh Myneni24816
  • 1 Rankings as of 6 May 2019.

Other entrants

The following players received wildcards into the singles main draw:

The following players received entry into the singles main draw using their ITF World Tennis Ranking:

The following players received entry as alternates:

The following players received entry from the qualifying draw:

Champions

Singles

Doubles