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.
Singles main-draw entrants
Seeds
Rankings are as of 21 September 2020.
Other entrants
The following players received wildcards into the singles main draw: Rémy Bertola Gabriele Felline Stefano Napolitano
The following player received entry into the singles main draw using a protected ranking: Blaž Kavčič
The following players received entry from the qualifying draw: Andrea Arnaboldi Alexandre Müller Andrea Pellegrino Tseng Chun-hsin
Champions
Singles
Facundo Bagnis def. Blaž Kavčič 6–7(4–7), 6–4, 0–0 ret.
Doubles
Harri Heliövaara / Szymon Walków def. Lloyd Glasspool / Alex Lawson 7–5, 6–3.