The 2020 TK Sparta Prague Open was a professional tennis tournament played on outdoor clay courts.

It took place in Prague, Czech Republic between 29 August – 6 September 2020.

This was done to allow players unable to participate in the US Open qualifying to compete, which was cancelled due to the ongoing COVID-19 pandemic.

[4] Due to the overwhelming size of participants, the event scheduled to be held only on TK Sparta Praha had to have make use also of nearby I. Czech Lawn Tennis Club on the Stvanice Island.

[5] 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 as an alternate: