| 2021 Biella Challenger VI | |
|---|---|
| Date | 17–23 May 2021 |
| Edition | 15th |
| Surface | Clay |
| Location | Biella, Italy |
| Champions | |
| Singles | |
 Thanasi Kokkinakis | |
| Doubles | |
 Evan King /  Julian Lenz | |
The 2021 Biella Challenger VI was a professional tennis tournament played on outdoor red clay courts. It was part of the 2021 ATP Challenger Tour. It took in Biella, Italy between 17 and 23 May 2021.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ITA | Paolo Lorenzi | 167 | 1 |
 CHN | Zhang Zhizhen | 183 | 2 |
 FRA | Enzo Couacaud | 188 | 3 |
| FRA | Alexandre Müller | 189 | 4 |
 KAZ | Dmitry Popko | 193 | 5 |
| AUS | Alex Bolt | 194 | 6 |
 BRA | João Menezes | 196 | 7 |
| USA | Bjorn Fratangelo | 198 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Riccardo Bonadio 
Tomás Martín Etcheverry Omar Giacalone
Tim van Rijthoven Thanasi Kokkinakis def. Enzo Couacaud 6–3, 6–4. Evan King / Julian Lenz def. 
Karol Drzewiecki / 
Sergio Martos Gornés 3–6, 6–3, [11–9].The 2010 Canella Challenger was a professional tennis tournament played on outdoor red clay courts. It was part of the 2010 ATP Challenger Tour. It took place in Biella, Italy between May 10 and May 16, 2010. It returned for the first time since 2006.
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The 2021 Internazionali di Tennis Città di Forlì was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Forlì, Italy between 14 and 20 June 2021.
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