The Porto Open is a professional tennis tournament played on outdoor hard courts. It is currently part of the ATP Challenger Tour and the ITF Women's World Tennis Tour, and has been held annually at the Complexo Ténis Monte Aventino in Porto, Portugal, since 1999 for women and since 2007 for men. Between 2001 and 2002, the tournament was classed as a Tier IV event on the Women's Tennis Association (WTA) Tour. It was held for two years (2001–2002), and had a total prize fund of $140,000 in each year. The most notable player to win the singles was three-time French Open champion Arantxa Sánchez Vicario, who won the 2001 event. The tournament was played on clay courts up until the 2019 edition, where it changed to hard courts.

Past finals

Women's singles

Men's singles

Women's doubles

Men's doubles