The 2000 Estoril Open was a tennis tournament played on outdoor clay courts.

This event was the 11th edition of the Estoril Open for the men (the 4th for the women), included in the 2000 ATP Tour International Series and in the 2000 WTA Tour Tier IV Series.

Carlos Moyá and Anke Huber won the singles titles.

Carlos Moyá defeated Francisco Clavet, 6–3, 6–2 Anke Huber defeated Nathalie Dechy, 6–2, 1–6, 7–5 Donald Johnson / Piet Norval defeated David Adams / Joshua Eagle, 6–4, 7–5 Tina Križan / Katarina Srebotnik defeated Amanda Hopmans / Cristina Torrens Valero, 6–0, 7–6(11–9)

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