Diego Martín Rossi Marachlian (born 5 March 1998) is a Uruguayan professional footballer who plays as a winger or forward for Major League Soccer club Columbus Crew and the Uruguay national team.

At the age of six, Rossi moved to the Solymar Uruguay Sports Center, with which he competed in the Interbalnearian League of Youth Football.

Néstor Gonçalves discovered him and was invited to play a friendly tournament in Alegrete with the a team, where he eventually was offered a contract.

[8] On 7 April 2015, he was invited to train with the first-team squad of Peñarol for the first time, along with his teammates from the under-17 team Santiago Bueno and Federico Valverde.

At the end of the 2015–16 season, Rossi was demoted to the second team following a change in managerial leadership, where Bengoechea was sacked and Jorge Orosmán da Silva took over.

Following a series of poor results, da Silva called Rossi into the first team, where on 20 April 2016, he made his full debut with the club, playing against Sporting Cristal in the 2016 Copa Libertadores group stage match.

[13] Deployed as a striker at various youth levels, Rossi eventually shifted out as a winger when manager Leonardo Ramos believed his skillset would offer more in a wider position without having to sacrifice any of Peñarol’s other forwards in the starting lineup.

[14] On 14 December 2017, Rossi was signed as a Young Designated Player for Los Angeles FC of Major League Soccer, an expansion franchise that began play in 2018.

[17][18] On 8 August 2018, Rossi scored all three goals for his club and recorded his first hat-trick in MLS during a U.S. Open Cup semifinal match against the Houston Dynamo, a game in which LAFC ultimately lost in penalty kicks.

On 1 September 2021, it was announced that Rossi would join Süper Lig club Fenerbahçe on loan for the remainder of the 2021 season with an option to buy, making him the second Armenian-heritage footballer to play in the Turkish league after Aras Özbiliz.

[35] Rossi carried his strong cup form into league play, scoring in three consecutive matches, including a brace against Orlando City.

[39] Capable of performing on either wing or as a centre-forward, Rossi's playing style is marked by speed, work rate, directness, and knack for consistently threatening the opposition's goal by making well-timed runs behind the defensive line.