| Date: | 1 October – 9 October |
| Edition: | 1st |
| Surface: | Hard |
| Location: | Stockton, California, United States |
| Champs: |  Frances Tiafoe |
| Champd: | Brian Baker /  Sam Groth |
The 2016 Stockton ATP Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Stockton, California, United States between 1 October and 9 October 2016.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Bjorn Fratangelo | 109 | 1 | ||
| Tim Smyczek | 118 | 2 | ||
| Frances Tiafoe | 121 | 3 | ||
 Colombia | Santiago Giraldo | 129 | 4 | |
| Denis Kudla | 131 | 5 | ||
 Italy | Alessandro Giannessi | 144 | 6 | |
| Dennis Novikov | 148 | 7 | ||
 France | Quentin Halys | 160 | 8 |
The following players received wildcards into the singles main draw:
José Chamba Gómez Nicolas Meister Brian BakerThe following players received entry using a special exempt into the singles main draw:
The following players received entry from the qualifying draw:
Brydan Klein Salvatore Caruso Dennis NevoloSee main article: 2016 Stockton ATP Challenger – Singles.
Frances Tiafoe def. Noah Rubin, 6–4, 6–2.See main article: 2016 Stockton ATP Challenger – Doubles.
Brian Baker / Sam Groth def. Matt Reid / John-Patrick Smith, 6–2, 4–6, [10–2].