The 2020 Bett1Hulks Indoors was an ATP tournament organized for male professional tennis players, held in Cologne, Germany, in mid-October 2020 on indoor hard courts.

It was primarily organized due to the cancellation of many tournaments during the 2020 season due to the COVID-19 pandemic.

It was the first and only edition of the tournament and took place at the Lanxess Arena in Cologne, Germany, from October 12 through 18, 2020.

[1] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: All dates and times are CEST (UTC+2)