- Source: 2019 Sibiu Open
The 2019 Sibiu Open was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Sibiu, Romania between 16 and 22 September 2019.
Singles main-draw entrants
= Seeds
=1 Rankings are as of 9 September 2019.
= Other entrants
=The following players received wildcards into the singles main draw:
Adrian Bodmer
Victor Vlad Cornea
Michał Dembek
Alexandru Jecan
Filip Cristian Jianu
The following players received entry into the singles main draw as alternates:
Pavel Nejedlý
Petr Nouza
Fabien Reboul
The following players received entry from the qualifying draw:
Jaroslav Pospíšil
Matej Sabanov
The following player received entry as a lucky loser:
Sergio Martos Gornés
Champions
= Singles
=Danilo Petrović def. Christopher O'Connell 6–4, 6–2.
= Doubles
=Sadio Doumbia / Fabien Reboul def. Ivan Sabanov / Matej Sabanov 6–4, 3–6, [10–7].