| 2018 Las Vegas Challenger | |
|---|---|
| Date | 22–28 October |
| Edition | 4th |
| Draw | 32S / 16D |
| Surface | Hard / Outdoors |
| Location | Las Vegas, United States |
| Champions | |
| Singles | |
 Thanasi Kokkinakis | |
| Doubles | |
 Marcelo Arévalo /  Roberto Maytín | |
The 2018 Las Vegas Challenger was a professional tennis tournament played on hard courts. It was the fourth edition of the revamped tournament which was the part of the 2018 ATP Challenger Tour. It took place in Las Vegas, United States between 22 and 28 October 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 RSA | Lloyd Harris | 112 | 1 |
 ESP | Adrián Menéndez Maceiras | 122 | 2 |
 NOR | Casper Ruud | 127 | 3 |
 TPE | Jason Jung | 128 | 4 |
 USA | Noah Rubin | 129 | 5 |
| USA | |||
 GER | Dominik Köpfer | 175 | 7 |
| ESA | Marcelo Arévalo | 181 | 8 |
The following players received wildcards into the singles main draw:
Alexander Cozbinov Evan Song
Mikael Torpegaard J. J. Wolf 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:
The following players received entry as lucky losers:
Thanasi Kokkinakis def. 
Blaž Rola 6–4, 6–4. Marcelo Arévalo / Roberto Maytín def. Robert Galloway / Nathan Pasha 6–3, 6–3.The 2015 Las Vegas Challenger was a professional tennis tournament played on hard courts. It was the first edition of the revamped tournament which was part of the 2015 ATP Challenger Tour. Challenger level events had ended in Las Vegas in the year 2000. It took place in Las Vegas, United States between 19 and 25 October 2015.
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