| 2015 Fairfield Challenger | |
|---|---|
| Date | 12–18 October |
| Edition | 1st |
| Surface | Hard |
| Location | Fairfield, California, United States |
| Champions | |
| Singles | |
 Taylor Fritz | |
| Doubles | |
 Johan Brunström /  Frederik Nielsen | |
The 2015 Fairfield Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Fairfield, California, United States between 12 and 18 October 2015.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA | Tim Smyczek | 98 | 1 |
| USA | Ryan Harrison | 104 | 2 |
 GER | Dustin Brown | 108 | 4 |
 SLO | Blaž Rola | 137 | 4 |
| USA | Jared Donaldson | 153 | 5 |
| SLO | Blaž Kavčič | 162 | 6 |
| GER | Daniel Brands | 177 | 7 |
 IRL | James McGee | 186 | 8 |
The following players received wildcards into the singles main draw:
Connor Hance Marcos Giron 
Sem Verbeek Tommy Paul The following player received entry using a special exemption:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Taylor Fritz def. Dustin Brown, 6–3, 6–4. [1] Johan Brunström / Frederik Nielsen def. 
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