| 2016 Fairfield Challenger | |
|---|---|
| Date | 10–16 October |
| Edition | 2nd |
| Surface | Hard |
| Location | Fairfield, California, United States |
| Champions | |
| Singles | |
 Santiago Giraldo | |
| Doubles | |
 Brian Baker / Mackenzie McDonald | |
The 2016 Fairfield Challenger was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Fairfield, California, United States between October 10 and October 16, 2016.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA |
Frances Tiafoe | 117 | 1 |
| COL |
Santiago Giraldo | 127 | 2 |
| USA |
Tim Smyczek | 134 | 4 |
 BAR |
Darian King | 135 | 4 |
 ITA |
Alessandro Giannessi | 144 | 5 |
| USA |
Dennis Novikov | 147 | 6 |
 SLO |
Grega Žemlja | 162 | 7 |
 GER |
Maximilian Marterer | 167 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry using special exemptions:
The following players received entry from the qualifying draw:
Brydan Klein
Hans Podlipnik Dennis Nevolo Cameron Norrie Santiago Giraldo def. 
Quentin Halys, 4–6, 6–4, 6–2. Brian Baker / Mackenzie McDonald def. Sekou Bangoura / Eric Quigley, 6–3, 6–4.