The 2015 Miami Open presented by Itaú (also known as 2015 Miami Masters) was a professional men and women's tennis tournament played on outdoor hard courts. It was the 31st edition of the Miami Masters, and was part of the Masters 1000 category on the 2015 ATP World Tour, and of the Premier Mandatory category on the 2015 WTA Tour. All men and women's events took place at the Tennis Center at Crandon Park in Key Biscayne, Florida, United States, from March 24 through April 5, 2015.