# 2018 Barcelona Open Banco Sabadell – Doubles

Florin Mergea and Aisam-ul-Haq Qureshi were the defending champions, but Mergea chose to compete in Budapest instead. Qureshi played alongside Jean-Julien Rojer, but lost in the final to Feliciano López and Marc López, 6–7$^{(5–7)}$, 4–6.
Feliciano and Marc López became the first all-spanish team in winning the tournament since 1997.

## Seeds

* Łukasz Kubot / Marcelo Melo (quarterfinals)
* Henri Kontinen / John Peers (first round)
* Oliver Marach / Mate Pavić (quarterfinals, withdrew)
* Bob Bryan / Mike Bryan (withdrew due to a low back injury on Mike)

## 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 |
| 1 | Ł Kubot M Melo | 6 | 6 | | | | | | | | | | | | | | |
| | K Khachanov D Schwartzman | 3 | 0 | | 1 | Ł Kubot M Melo | 5 | 6 | [5] | | | | | | | | |
| Q | J Munar T Robredo | 5 | 3 | | | A-u-H Qureshi J-J Rojer | 7 | 3 | [10] | | | | | | | | |
| | A-u-H Qureshi J-J Rojer | 7 | 6 | | | | | | | | A-u-H Qureshi J-J Rojer | 7$^7$ | 3 | [10] | | | |
| LL | N Jarry G Pella | 7 | 7 | | | | | | | LL | N Jarry G Pella | 6$^5$ | 6 | [7] | | | |
| | J Murray B Soares | 5 | 5 | | LL | N Jarry G Pella | 2 | 6 | [10] | | | | | | | | |
| LL | J Cerretani G García López | 0 | 4 | | | P Cuevas M Granollers | 6 | 4 | [3] | | | | | | | | |
| | P Cuevas M Granollers | 6 | 6 | | | | | | | | | | | | A-u-H Qureshi J-J Rojer | 6$^5$ | 4 |
| | I Dodig R Ram | 2 | 4 | | | | | | | | | | | | F López M López | 7$^7$ | 6 |
| | F López M López | 6 | 6 | | | F López M López | w/o | | | | | | | | | | |
| WC | R Carballés Baena A Ramos Viñolas | 2 | 7 | [11] | 3 | O Marach M Pavić | | | | | | | | | | | |
| 3 | O Marach M Pavić | 6 | 5 | [13] | | | | | | | F López M López | 4 | 6 | [10] | | | |
| | JS Cabal R Farah | 6 | 7 | | | | | | | | JS Cabal R Farah | 6 | 3 | [6] | | | |
| WC | Í Cervantes D Marrero | 3 | 5 | | | JS Cabal R Farah | 4 | 7$^{11}$ | [13] | | | | | | | | |
| | R Bopanna É Roger-Vasselin | 7$^9$ | 6 | | | R Bopanna É Roger-Vasselin | 6 | 6$^9$ | [11] | | | | | | | | |
| 2 | H Kontinen J Peers | 6$^7$ | 3 | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* James Cerretani / Guillermo García López (first round, lucky losers)
* Federico Delbonis / Leonardo Mayer (first round)

### Qualifiers

* Jaume Munar / Tommy Robredo

### Lucky losers

* James Cerretani / Guillermo García López
* Nicolás Jarry / Guido Pella

### Qualifying draw

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | James Cerretani Guillermo García López | 4 | 3 | | | | | | |
| WC | Jaume Munar Tommy Robredo | 6 | 6 | | | | | | |
| WC | Jaume Munar Tommy Robredo | 6 | 6 | | WC | Jaume Munar Tommy Robredo | 6$^4$ | 6 | [11] |
| | | | | | | Nicolás Jarry Guido Pella | 7$^7$ | 3 | [9] |
| | Nicolás Jarry Guido Pella | 4 | 6 | [12] | | Nicolás Jarry Guido Pella | 7$^7$ | 3 | [9] |
| 2 | Federico Delbonis Leonardo Mayer | 6 | 1 | [10] | | | | | |