| 2020 Sibiu Open | |
|---|---|
| Date | 21–27 September |
| Edition | 9th |
| Location | Sibiu, Romania |
| Champions | |
| Singles | |
 Marc-Andrea Hüsler | |
| Doubles | |
 Hunter Reese /  Jan Zieliński | |
The 2020 Sibiu Open was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Sibiu, Romania between 21 and 27 September 2020.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 FRA | Arthur Rinderknech | 163 | 1 |
| FRA | Quentin Halys | 200 | 2 |
| SUI | Marc-Andrea Hüsler | 218 | 3 |
 ARG | Francisco Cerúndolo | 237 | 4 |
 RUS | Evgeny Karlovskiy | 254 | 5 |
 ESP | Adrián Menéndez Maceiras | 262 | 6 |
 TUN | Malek Jaziri | 264 | 7 |
 JPN | Shuichi Sekiguchi | 274 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Elmar Ejupovic Carlos Gómez-Herrera 
Ergi Kırkın Matthieu Perchicot Marc-Andrea Hüsler def. Tomás Martín Etcheverry 7–5, 6–0. Hunter Reese / Jan Zieliński def. Robert Galloway / 
Hans Hach Verdugo 6–4, 6–2.The 2012 BRD Sibiu Challenger was a professional tennis tournament played on clay courts. It was the 1st edition of the tournament which was part of the 2012 ATP Challenger Tour. It takes place in Sibiu, Romania between 6 and 12 August 2012.
The 2013 Sibiu Open was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2013 ATP Challenger Tour. It takes place in Sibiu, Romania between 23 and 29 September 2013.
The 2015 Poznań Open was a professional tennis tournament played on clay courts. It was the twelfth edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place at the Park Tenisowy Olimpia in Poznań, Poland from 11 to 19 July 2015, including the qualifying competition in the first two days. The tournament had its prize money increased to €64,000 + Hospitality, and thus offered 100 ATP ranking points for singles and doubles winners.
The 2014 Sibiu Open was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2014 ATP Challenger Tour. It took place in Sibiu, Romania between 22 and 28 September 2014.
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The 2016 Sibiu Open was a professional tennis tournament played on clay courts. It was the fifth edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Sibiu, Romania between 19 and 25 September 2016.
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The 2021 Sibiu Open was a professional tennis tournament played on clay courts. It was the tenth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Sibiu, Romania between 27 September and 3 October 2021.
The 2022 Sibiu Open was a professional tennis tournament played on clay courts. It was the eleventh edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Sibiu, Romania between 19 and 25 September 2022.
