1998 Estoril Open – Men's doubles

Gustavo Kuerten and Fernando Meligeni were the defending champions. Kuerten did not participate this year. Meligeni partnered Filippo Messori, losing in the quarterfinals.

Donald Johnson and Francisco Montana won in the final 6–1, 2–6, 6–1, against David Roditi and Fernon Wibier.

Seeds

 * 1) 🇺🇸 Donald Johnson / 🇺🇸 Francisco Montana (champions)
 * 2) 🇦🇷 Luis Lobo / 🇪🇸 Javier Sánchez (first round)
 * 3) 🇬🇧 Neil Broad /  Piet Norval (first round)
 * 4)  David Adams / 🇦🇷 Daniel Orsanic (first round)