The Madrid Open, or Mutua Madrid Open for sponsorship reasons and Madrid Masters, is a men's and women's tennis tournament belonging to the Masters 1000 and WTA 1000 categories that takes place annually in Madrid. Inaugurated in 2002 on the indoor hard courts of the Madrid Arena, since 2009 it has been played on the outdoor clay courts of the Caja Mágica.

The tournament draws its origins from the Stockholm Open, which until 1994 was part of the ATP Championships Series Single Week, the most important men's tournament after the Grand Slam which would later take the name Masters 1000.

The 2020 edition was canceled due to the COVID-19 pandemic. In December 2021, the tournament was sold to the US company IMG, which plans to expand the facilities with the construction of new tennis courts and a stadium with capacity of over 10,000 seats, to be created by draining part of the lake that surrounds the Caja Magica. I

n 2023 the draw was extended from 56 to 96 players for the ATP and from 64 to 96 for the WTA, the duration of the tournament increased from 8 to 12 days, and the qualifying rounds were played on the first Monday and Tuesday .