Marcelo Pinheiro Davi de Melo (Portuguese pronunciation: [ma??s?lu ?m?lu]; born September 23, 1983) is a Brazilian tennis player. He is the younger brother of Daniel Melo and grew up in Belo Horizonte, Brazil. He stands at a height of 2.03 m (6 ft. 8 in.).
Primarily a doubles specialist, his career-high doubles ranking is World No. 1, which he achieved in November 2015, the best Brazilian doubles player position of all time. He is the first Brazilian male ever to win a French Open doubles title (in 2015, playing alongside Croatian Ivan Dodig) and a Wimbledon doubles title (in 2017, alongside Polish ?ukasz Kubot).
Alongside regular teammate André Sá, he reached the mens doubles semifinals at Wimbledon in 2007 and the quarterfinal at the 2007 US Open. In 2009, he reached the mixed doubles final at the French Open with American Vania King, becoming the seventh Brazilian to reach the final of a Grand Slam and the first since Gustavo Kuerten. Melo has won 9 Masters 1000 titles and reached the doubles final on the ATP World Tour Finals. He has also reached at least the semifinals of all four Grand Slams, winning his first title in Roland Garros and his second in Wimbledon.