2019 Croatia Open Umag – Doubles

Robin Haase and Matwé Middelkoop were the defending champions, but Middelkoop chose to compete in Båstad instead.

Haase played alongside Philipp Oswald and successfully defended the title, defeating Oliver Marach and Jürgen Melzer in the final, 7–5, 6–7(2–7), [14–12].

Seeds
• # 🇦🇹 Oliver Marach / 🇦🇹 Jürgen Melzer (final)

• # Robin Haase / 🇦🇹 Philipp Oswald (champions)

• # 🇺🇦 Denys Molchanov / 🇸🇰 Igor Zelenay (semifinals)

• # 🇦🇷 Leonardo Mayer / 🇦🇷 Andrés Molteni (semifinals)