2021 Las Vegas Challenger

The 2021 Las Vegas Challenger was a professional tennis tournament played on hard courts. It was the sixth edition of the revamped tournament which was the part of the 2021 ATP Challenger Tour. It took place in Las Vegas, United States between 25 and 31 October 2021.

Seeds

 * 1 Rankings are as of October 18, 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * Christopher Bulus
 * 🇺🇸 Aleksandar Kovacevic
 * Jordan Sauer

The following player received entry into the singles main draw as an alternate:
 * 🇺🇸 Stefan Kozlov

The following players received entry from the qualifying draw:
 * 🇦🇺 Dayne Kelly
 * 🇯🇵 Shintaro Mochizuki
 * 🇮🇳 Mukund Sasikumar
 * 🇺🇸 Donald Young

The following players received entry as lucky losers:
 * 🇺🇸 Nick Chappell
 * 🇬🇧 Aidan McHugh

Singles

 * 🇺🇸 J. J. Wolf def. 🇺🇸 Stefan Kozlov 6–4, 6–4.

Doubles

 * 🇺🇸 William Blumberg / 🇺🇸 Max Schnur def. Jason Jung / 🇺🇸 Evan King 7–5, 6–7(5–7), [10–5].