Ezequiel Osvaldo Maderna (born October 1, 1986) is an Argentine professional boxer.
He is also a former Olympian for Argentina in the men's middleweight division.
[1] At the South American Games 2006 he won bronze when he lost 7:9 to Alfonso Blanco.
At the second Olympic qualifier he beat three fighters including Clarence Joseph then lost to fellow-qualifier Shawn Estrada but got his ticket anyway.
[2] On December 6, 2008 Maderna won his pro debut against veteran Guillermo Pablo Armani.