| 2020 Slovak Open | |
|---|---|
| Date | 9–15 November |
| Edition | 21st |
| Category | ATP Challenger Tour |
| Surface | Hard (indoor) |
| Location | Bratislava, Slovakia |
| Champions | |
| Singles | |
 Maximilian Marterer | |
| Doubles | |
 Harri Heliövaara / Emil Ruusuvuori | |
The 2020 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 21st edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Bratislava, Slovakia between 9 and 15 November 2020.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FIN | Emil Ruusuvuori | 84 | 1 |
 JPN | Yasutaka Uchiyama | 101 | 2 |
 POL | Kamil Majchrzak | 106 | 3 |
 FRA | Antoine Hoang | 129 | 4 |
 SUI | Henri Laaksonen | 132 | 5 |
 SRB | Nikola Milojević | 134 | 6 |
 ITA | Federico Gaio | 137 | 7 |
| ITA | Lorenzo Giustino | 147 | 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 players received entry into the singles main draw as special exempts:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Maximilian Marterer def. 
Tomáš Macháč 6–7(3–7), 6–2, 7–5. Harri Heliövaara / Emil Ruusuvuori def. 
Lukáš Klein / Alex Molčan 6–4, 6–3.The 2015 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 16th edition of the tournament which was part of the 2015 ATP Challenger Tour. It was also the 7th edition of the tournament which was part of the ITF Women's Circuit. It took place in Bratislava, Slovakia between 9 and 15 November 2015.
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