1990 Estoril Open – Men's doubles

This was the first edition of the event.

Sergio Casal and Emilio Sánchez won in the final 7–5, 4–6, 7–5, against Omar Camporese and Paolo Canè.

Seeds

 * 1) 🇪🇸 Sergio Casal / 🇪🇸 Emilio Sánchez (champions)
 * 2) 🇪🇨 Andrés Gómez / 🇪🇸 Javier Sánchez (quarterfinals)
 * 3) 🇪🇸 Tomás Carbonell /  Karel Nováček (semifinals)
 * 4)  Paul Haarhuis /  Mark Koevermans (quarterfinals)