The 2020 Thindown Challenger Biella was a professional tennis tournament played on outdoor red clay courts.

It was part of the 2020 ATP Challenger Tour.

It took place in Biella, Italy between 28 September and 4 October 2020.

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 from the qualifying draw:

This tennis-related competition article is a stub.