# 2018 Rio Open – Doubles

Pablo Carreño Busta and Pablo Cuevas were the defending champions, but withdrew before the tournament began.
David Marrero and Fernando Verdasco won the title, defeating Nikola Mektić and Alexander Peya in the final, 5–7, 7–5, [10–8]. Marrero and Verdasco were the first lucky loser team to win an ATP World Tour doubles title since 2014.

## Seeds

* Łukasz Kubot / Marcelo Melo (quarterfinals)
* Jamie Murray / Bruno Soares (semifinals)
* Juan Sebastián Cabal / Robert Farah (first round)
* Santiago González / Julio Peralta (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Draw

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Ł Kubot M Melo | 6 | 4 | [10] | | | | | | | | | | | | | | | |
| Q | N Jarry J Veselý | 4 | 6 | [4] | 1 | Ł Kubot M Melo | 6$^4$ | 2 | | | | | | | | | | | |
| | A Molteni H Zeballos | 6 | 6 | | | A Molteni H Zeballos | 7$^7$ | 6 | | | | | | | | | | | |
| WC | T Bellucci A Sá | 1 | 3 | | | | | | | | A Molteni H Zeballos | 4 | 6 | [7] | | | | | |
| 3 | JS Cabal R Farah | 6$^5$ | 5 | | | | | | | | N Mektić A Peya | 6 | 3 | [10] | | | | | |
| | N Mektić A Peya | 7$^7$ | 7 | | | N Mektić A Peya | 7 | 6 | | | | | | | | | | | |
| | G Pella D Schwartzman | 6 | 2 | [10] | | G Pella D Schwartzman | 5 | 3 | | | | | | | | | | | |
| | H Podlipnik-Castillo A Vasilevski | 3 | 6 | [3] | | | | | | | | | | | | N Mektić A Peya | 7 | 5 | [8] |
| | M Demoliner G Monfils | 6 | 1 | [5] | | | | | | | | | | | LL | D Marrero F Verdasco | 5 | 7 | [10] |
| LL | D Marrero F Verdasco | 1 | 6 | [10] | LL | D Marrero F Verdasco | 7 | 3 | [10] | | | | | | | | | | |
| | F Fognini M López | 3 | 2 | | 4 | S González J Peralta | 5 | 6 | [2] | | | | | | | | | | |
| 4 | S González J Peralta | 6 | 6 | | | | | | | LL | D Marrero F Verdasco | 6 | 6 | | | | | | |
| | R Jebavý L Mayer | 6 | 6$^5$ | [10] | | | | | | 2 | J Murray B Soares | 4 | 4 | | | | | | |
| | G García López A Ramos Viñolas | 2 | 7$^7$ | [7] | | R Jebavý L Mayer | 3 | 4 | | | | | | | | | | | |
| WC | F de Paula T Monteiro | 3 | 1 | | 2 | J Murray B Soares | 6 | 6 | | | | | | | | | | | |
| 2 | J Murray B Soares | 6 | 6 | | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* David Marrero / Fernando Verdasco (qualifying competition, lucky losers)
* Nicolás Jarry / Jiří Veselý (qualified)

### Qualifiers

* Nicolás Jarry / Jiří Veselý

### Lucky losers

* David Marrero / Fernando Verdasco

### Qualifying draw

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | David Marrero Fernando Verdasco | 6 | 6$^3$ | [10] | | | | | |
| | Gerald Melzer Tennys Sandgren | 4 | 7$^7$ | [4] | | | | | |
| | Gerald Melzer Tennys Sandgren | 4 | 7$^7$ | [4] | 1 | David Marrero Fernando Verdasco | 6 | 3 | [5] |
| | | | | | 2 | Nicolás Jarry Jiří Veselý | 2 | 6 | [10] |
| WC | Mateus Alves Fabrício Neis | | | | 2 | Nicolás Jarry Jiří Veselý | 2 | 6 | [10] |
| 2 | Nicolás Jarry Jiří Veselý | w/o | | | | | | | |