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)