| 2018 Tiburon Challenger | |
|---|---|
| Date | 24–30 September |
| Edition | 12th |
| Draw | 32S / 16D |
| Surface | Hard |
| Location | Tiburon, United States |
| Champions | |
| Singles | |
 Michael Mmoh | |
| Doubles | |
 Hans Hach Verdugo /  Luke Saville | |
The 2018 Wells Fargo Tiburon Challenger was a professional tennis tournament played on outdoor hard courts. It was the twelfth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Tiburon, United States between September 24 and September 30, 2018.[1][2][3]
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ESP
|
Marcel Granollers | 102 | 1 |
| AUS
|
Jordan Thompson | 111 | 2 |
 CAN
|
Peter Polansky | 113 | 3 |
 SUI
|
Henri Laaksonen | 121 | 4 |
| USA
|
Michael Mmoh | 124 | 5 |
| USA
|
Noah Rubin | 138 | 6 |
| AUS
|
Marc Polmans | 163 | 7 |
| USA
|
Bjorn Fratangelo | 169 | 8 |
The following players received wildcards into the singles main draw:
The 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:
Michael Mmoh def. Marcel Granollers 6–3, 7–5. Hans Hach Verdugo / Luke Saville def. Gerard Granollers / Pedro Martínez 6–3, 6–2.
