The 2017 Thindown Challenger Biella was a professional tennis tournament played on outdoor red clay courts. It was part of the 2017 ATP Challenger Tour. It took place in Biella, Italy between 31 July – 6 August 2017.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Italy | Marco Cecchinato | 104 | 1 | |
 Spain | Guillermo García López | 131 | 2 | |
 Argentina | ||||
| Argentina | Guido Andreozzi | 139 | 4 | |
 Serbia | Filip Krajinović | 141 | 5 | |
 Brazil | João Souza | 145 | 6 | |
| Italy | Stefano Travaglia | 146 | 7 | |
| Spain | Roberto Carballés Baena | 158 | 8 |
The following players received wildcards into the singles main draw:
Matteo Donati Andrea Pellegrino Pietro Rondoni Lorenzo SonegoThe following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
See main article: 2017 Thindown Challenger Biella – Singles.
Filip Krajinović def. Salvatore Caruso 6–3, 6–2.See main article: 2017 Thindown Challenger Biella – Doubles.
Attila Balázs / Fabiano de Paula def. 
Johan Brunström / Dino Marcan 5–7, 6–4, [10–4].
