| 2018 Thindown Challenger Biella | |
|---|---|
| Date | 17–23 September 2018 |
| Edition | 11th |
| Surface | Clay |
| Location | Biella, Italy |
| Champions | |
| Singles | |
 Federico Delbonis | |
| Doubles | |
 Fabrício Neis /  David Vega Hernández | |
The 2018 Thindown Challenger Biella was a professional tennis tournament played on outdoor red clay courts. It was part of the 2018 ATP Challenger Tour. It took place in Biella, Italy between 17 and 23 September 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| ESP | Roberto Carballés Baena | 94 | 1 |
| ARG | Federico Delbonis | 100 | 2 |
 ITA | Paolo Lorenzi | 113 | 3 |
| BRA | Thiago Monteiro | 117 | 4 |
| ARG | Marco Trungelliti | 134 | 5 |
| ITA | Stefano Travaglia | 147 | 6 |
 POR | Gastão Elias | 154 | 7 |
| ESP | Daniel Gimeno Traver | 158 | 8 |
The following players received wildcards into the singles main draw:
Enrico Dalla Valle Paolo Lorenzi Andrea Pellegrino Pietro RondoniThe following players received entry into the singles main draw as special exempts:
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:
Oscar José Gutierrez
Juan Pablo Varillas Federico Delbonis def. Stefano Napolitano 6–4, 6–3. Fabrício Neis / David Vega Hernández def. 
Rameez Junaid / 
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