| Doubles | |
|---|---|
| 2018 Las Vegas Challenger | |
| Champions |  Marcelo Arévalo  Roberto Maytín |
| Runners-up |  Robert Galloway Nathan Pasha |
| Final score | 6–3, 6–3 |
Brydan Klein and Joe Salisbury were the defending champions but chose not to defend their title.
Marcelo Arévalo and Roberto Maytín won the title after defeating Robert Galloway and Nathan Pasha 6–3, 6–3 in the final.
Marcelo Arévalo / Roberto Maytín (Champions)
Matt Reid / John-Patrick Smith (Quarterfinals) Hunter Reese / Jackson Withrow (First round) Robert Galloway / Nathan Pasha (Final)| First Round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Arévalo R Maytín | 6 | 6 | ||||||||||||||||||||||||
| WC | S Kozlov Jac Vance | 4 | 4 | 1 | M Arévalo R Maytín | 77 | 5 | [10] | |||||||||||||||||||
 D Köpfer  T Matsui | 6 | 6 | D Köpfer T Matsui | 62 | 7 | [2] | |||||||||||||||||||||
| WC |  CJ Lock  B Saraiva | 1 | 3 | 1 | M Arévalo R Maytín | 7 | 65 | [10] | |||||||||||||||||||
| 3 | H Reese J Withrow | 5 | 5 |  J Jung M Krueger | 5 | 77 | [5] | ||||||||||||||||||||
 R Gonzales N Lammons | 7 | 7 | R Gonzales N Lammons | 3 | 64 | ||||||||||||||||||||||
 H Hach Verdugo LD Martínez | 4 | 4 | J Jung M Krueger | 6 | 77 | ||||||||||||||||||||||
| J Jung M Krueger | 6 | 6 | 1 | M Arévalo R Maytín | 6 | 6 | |||||||||||||||||||||
 L Harris R Roelofse | w/o | 4 | R Galloway N Pasha | 3 | 3 | ||||||||||||||||||||||
| Q | JC Aragone T Kokkinakis | L Harris R Roelofse | 2 | 65 | |||||||||||||||||||||||
 A Shamasdin  A Siljeström | 64 | 64 | 4 | R Galloway N Pasha | 6 | 77 | |||||||||||||||||||||
| 4 | R Galloway N Pasha | 77 | 77 | 4 | R Galloway N Pasha | 6 | 6 | ||||||||||||||||||||
| WC | Alenik Clayton Eric Samuelsson | 4 | 2 |  D King N Rubin | 3 | 2 | |||||||||||||||||||||
| D King N Rubin | 6 | 6 | D King N Rubin | 4 | 78 | [14] | |||||||||||||||||||||
 K Majchrzak  N Serdarušić | 63 | 1 | 2 | M Reid J-P Smith | 6 | 66 | [12] | ||||||||||||||||||||
| 2 | M Reid J-P Smith | 77 | 6 | ||||||||||||||||||||||||
Andrés Molteni and Fernando Romboli were the defending champions, but both players chose not to participate.
Roberto Maytín and Hans Podlipnik-Castillo are the defending champions, but Maytín has partnered with Miguel Ángel Reyes-Varela and Podlipnik-Castillo has chosen not to participate. Roberto Maytín and Miguel Ángel Reyes-Varela are defeated by Ariel Behar and Giovanni Lapentti in the quarterfinals.
Marcelo Demoliner and Miguel Ángel Reyes-Varela were the defending champions but chose not to defend their title.
Marcelo Arévalo and Sergio Galdós were the defending champions but chose to defend their title with different partners. Arévalo partnered Miguel Ángel Reyes-Varela and successfully defended his title. Galdós partnered Roberto Maytín but lost in the first round to Arévalo and Reyes-Varela.
Matt Reid and John-Patrick Smith were the defending champions but chose not to defend their title.
Austin Krajicek and Jackson Withrow were the defending champions but only Krajicek chose to defend his title, partnering Matt Reid. Krajicek withdrew before the tournament began due to injury.
Roberto Quiroz and Caio Zampieri were the defending champions but only Quiroz chose to defend his title, partnering Yannick Hanfmann. Quiroz lost in the quarterfinals to Jay Clarke and Kevin Krawietz.
Alex Bolt and Max Purcell were the defending champions but only Purcell chose to defend his title, partnering Lloyd Harris. Purcell lost in the semifinals to Joris De Loore and Marc Polmans.
This was the first edition of the tournament.
Marcelo Arévalo and Miguel Ángel Reyes-Varela were the defending champions but only Arévalo chose to defend his title, partnering Roberto Maytín. Arévalo lost in the first round to Luis David Martínez and David Pérez Sanz.
André Göransson and Florian Lakat were the defending champions but lost in the quarterfinals to Gerard Granollers and Pedro Martínez.
Christopher Eubanks and Evan King were the defending champions but only King chose to defend his title, partnering Nathan Pasha. King lost in the first round to Thanasi Kokkinakis and Matt Reid.
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.
Denis Kudla and Danny Thomas were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
Marcelo Arévalo and Jeevan Nedunchezhiyan were the defending champions but chose not to defend their title.
Marcelo Arévalo and Miguel Ángel Reyes-Varela were the defending champions and successfully defended their title, defeating Ariel Behar and Roberto Quiroz 1–6, 6–4, [12–10] in the final.
Roberto Maytín and Jackson Withrow were the defending champions but chose to defend their title with different partners. Maytín partnered Robert Galloway but lost in the first round to Filip Peliwo and Roy Smith. Withrow partnered Martin Redlicki and successfully defended his title.
Hans Hach Verdugo and Luke Saville were the defending champions but only Hach Verdugo chose to defend his title, partnering Dennis Novikov. Hach Verdugo lost in the first round to Alex Lawson and Jackson Withrow.
Marcelo Arévalo and Roberto Maytín were the defending champions but chose to defend their title with different partners. Arévalo partnered Miguel Ángel Reyes-Varela but lost in the first round to Ruben Gonzales and Ruan Roelofse. Maytín partnered Robert Galloway but lost in the first round to Nathan Pasha and Max Schnur.