2018 Argentina Open – Doubles
# 2018 Argentina Open – Doubles

Juan Sebastián Cabal and Robert Farah were the two-time defending champions, but lost in the final to Andrés Molteni and Horacio Zeballos, 3–6, 7–5, [3–10].

## Seeds

* Juan Sebastián Cabal / Robert Farah (final)
* Santiago González / Julio Peralta (first round)
* Nikola Mektić / Alexander Peya (first round)
* Andrés Molteni / Horacio Zeballos (champions)

## 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 | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | JS Cabal R Farah | $7^9$ | $7^{11}$ | | | | | | | | | | | | | | | |
| | M Demoliner G García López | $6^7$ | $6^9$ | | 1 | JS Cabal R Farah | w/o | | | | | | | | | | | |
| | F Delbonis G Pella | $6^5$ | 3 | | | P Carreño Busta P Cuevas | | | | | | | | | | | | |
| | P Carreño Busta P Cuevas | $7^7$ | 6 | | | | | | | 1 | JS Cabal R Farah | $7^{10}$ | 6 | | | | | |
| 3 | N Mektić A Peya | 6 | 3 | [8] | | | | | | | D Schwartzman D Thiem | $6^8$ | 2 | | | | | |
| | D Marrero F Verdasco | 3 | 6 | [10] | | D Marrero F Verdasco | 1 | 4 | | | | | | | | | | |
| | R Jebavý J Veselý | 6 | 2 | [3] | | D Schwartzman D Thiem | 6 | 6 | | | | | | | | | | |
| | D Schwartzman D Thiem | 3 | 6 | [10] | | | | | | | | | | 1 | JS Cabal R Farah | 3 | 7 | [3] |
| | C Berlocq A Ramos Viñolas | 3 | 3 | | | | | | | | | | | 4 | A Molteni H Zeballos | 6 | 5 | [10] |
| | H Podlipnik-Castillo A Vasilevski | 6 | 6 | | | H Podlipnik-Castillo A Vasilevski | 1 | 5 | | | | | | | | | | |
| WC | D Descloix G Monfils | 4 | 5 | | 4 | A Molteni H Zeballos | 6 | 7 | | | | | | | | | | |
| 4 | A Molteni H Zeballos | 6 | 7 | | | | | | | 4 | A Molteni H Zeballos | $7^7$ | $7^7$ | | | | | |
| WC | G Durán M González | 7 | 6 | | | | | | | WC | G Durán M González | $6^5$ | $6^2$ | | | | | |
| | A Bedene A Behar | 5 | 3 | | WC | G Durán M González | $6^6$ | 6 | [12] | | | | | | | | | |
| PR | A Haider-Maurer D Lajović | 3 | 6 | [10] | PR | A Haider-Maurer D Lajović | $7^8$ | 4 | [10] | | | | | | | | | |
| 2 | S González J Peralta | 6 | 3 | [5] | | | | | | | | | | | | | | |
