| 2020 I.ČLTK Prague Open | |
|---|---|
| Date | 17–23 August 2020 |
| Edition | 27th |
| Category | ATP Challenger Tour |
| Prize money | $125,000 |
| Surface | Clay |
| Location | Prague, Czech Republic |
| Champions | |
| Singles | |
 Stan Wawrinka | |
| Doubles | |
 Pierre-Hugues Herbert / Arthur Rinderknech | |
The 2020 I.ČLTK Prague Open is a professional tennis tournament played on outdoor clay courts. It was part of the 2020 ATP Challenger Tour. It took place only once in Prague, Czech Republic between 17 August and 6 September 2020 and has been abolished ever since.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| SUI
|
Stan Wawrinka | 17 | 1 |
 CZE
|
Jiří Veselý | 65 | 2 |
| FRA
|
Pierre-Hugues Herbert | 71 | 3 |
 GER
|
Philipp Kohlschreiber | 74 | 4 |
 SVK
|
Jozef Kovalík | 122 | 5 |
 IND
|
Sumit Nagal | 127 | 6 |
| SUI
|
Henri Laaksonen | 137 | 7 |
 BLR
|
Ilya Ivashka | 138 | 8 |
 SLO
|
Blaž Rola | 141 | 9 |
| GER
|
Yannick Maden | 149 | 10 |
 BEL
|
Kimmer Coppejans | 154 | 11 |
| SVK
|
Martin Kližan | 159 | 12 |
| FRA
|
Arthur Rinderknech | 161 | 13 |
 LAT
|
Ernests Gulbis | 162 | 14 |
 AUT
|
Sebastian Ofner | 163 | 15 |
 CAN
|
Steven Diez | 165 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
Stan Wawrinka def. 
Aslan Karatsev 7–6(7–2), 6–4. Pierre-Hugues Herbert / Arthur Rinderknech def. Zdeněk Kolář / Lukáš Rosol 6–3, 6–4.
