The Madrid Open (currently sponsored by Mutua) is a tournament for male and female professional tennis players, currently held in Madrid, Spain. The event is classified as an ATP World Tour Masters 1000 event on the Association of Tennis Professionals tour and a Premier Mandatory event on the Women's Tennis Association tour.
Ion Ţiriac the former Romanian ATP player and now billionaire businessman is the current owner of the tournament.
From 1990 through 2008, the tournament was classified as an ATP Masters Series event on the men's tour. The event was held in Essen, Germany in 1995 and Stockholm, Sweden from 1990 through 1994. When the tournament moved from Stockholm to Essen, the Stockholm Open continued as an ATP World Series tournament. From 1996 through 2001, the event was held in Stuttgart, Germany and from 2002 through 2008 at the Madrid Arena. The tournament was played from 1990 through 2008 on indoor hardcourts. In 2009, the surface became clay courts, the venue was changed to the Park Manzanares, and the tournament was expanded to include WTA professionals.