Diego Armando Valentin Contento (born 1 May 1990) is a German professional footballer who currently plays as a left back for Fortuna Düsseldorf.
Contento's family is from the outskirts of Naples (his father from Casalnuovo di Napoli and his mother from Caivano), Italy, and he was named after former S.S.C. Napoli star Diego Armando Maradona. His older brothers Vincenzo and Domenico were previously in Bayern's youth team.
Contento played for Bayern Munich's first-team in pre-season friendlies in 2009, appearing against the Austrian Bundesliga Champion Red Bull Salzburg as a second-half substitute for Edson Braafheid, and was named on the substitutes' bench for a Bundesliga match against FSV Mainz in August 2009. He was called up to Bayern Munich's squad for the 2009–10 UEFA Champions League, where he was assigned the number 26. In January 2010, it was announced that Contento would train with the first-team for the rest of the 2009–10 season, along with reserve team-mates David Alaba and Mehmet Ekici.