2019 Challenger de Buenos Aires – Doubles

Guido Andreozzi and Guillermo Durán were the defending champions but only Andreozzi chose to defend his title, partnering Andrés Molteni. Andreozzi successfully defended his title.

Andreozzi and Molteni won the title after defeating Hugo Dellien and Federico Zeballos 6–7(3–7), 6–2, [10–1] in the final.

Seeds
• # 🇦🇷 Guido Andreozzi / 🇦🇷 Andrés Molteni (champions)

• # 🇲🇽 Miguel Ángel Reyes-Varela / 🇧🇷 Fernando Romboli (semifinals)

• # 🇻🇪 Luis David Martínez / 🇧🇷 Felipe Meligeni Alves (semifinals)

• # 🇧🇴 Hugo Dellien / 🇧🇴 Federico Zeballos (final)