2009 Sony Ericsson Open

The 2009 Sony Ericsson Open was a men's and women's tennis tournament held from March 23 to April 5, 2009. It was the 25th edition of the Miami Masters event and was played on outdoor hard courts at the Tennis Center at Crandon Park in Key Biscayne, Florida, located near Miami. The tournament was part of 2009 ATP World Tour and 2009 WTA Tour, classified as ATP World Tour Masters 1000 and Premier Mandatory event respectively.

The men's singles event was won by British player Andy Murray, who defeated Novak Djokovic in the final. Victoria Azarenka of Belarus won the women's singles event by defeating defending champion Serena Williams. Both Murray and Azarenka were first-time winners at the tournament and also the first to win from their respective countries. In the doubles events, Max Mirnyi and Andy Ram won the men's title by defeating the team of Ashley Fisher and Stephen Huss. The women's doubles title was won by Svetlana Kuznetsova and Amélie Mauresmo who overcame Květa Peschke and Lisa Raymond in the final match.