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.
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. In Beijing he lost his rematch with Estrada in his first bout.
On December 6, 2008 Maderna won his pro debut against veteran Guillermo Pablo Armani.
|- | style="text-align:center;" colspan="8"|27 Wins (16 knockouts), 7 Losses |- ! Res. ! Record ! Opponent ! Type ! Rd.,Time ! Date ! Location ! Notes |- align=center |style="background:#dfd;"|Win||27âÂÂ7||align=left| Karol Itauma | | | |align=left| |align=left| |- align=center |Loss||26âÂÂ7||align=left| Malik Zinad | | | |align=left| |- align=center |Loss||26âÂÂ6||align=left| Fedor Chudinov | | | |align=left| |align=left| |- align=center |Loss||26âÂÂ5||align=left| Jose Uzcategui | | | |align=left| |align=left| |- align=center |Win||26âÂÂ4||align=left| Martin Fidel Rios | | | |align=left| |align=left| |- align=center |Win||25âÂÂ4||align=left| Jorge Daniel Caraballo | | | |align=left| |align=left| |- align=center |Loss||24âÂÂ4||align=left| Martin Fidel Rios | | | |align=left| |align=left| |- align=center |Win||24âÂÂ3||align=left| Walter Gabriel Sequeira | | | |align=left| |align=left| |- align=center |Loss||23âÂÂ3||align=left| Artur Beterbiyev | | | |align=left| |align=left| |- align=center |Win||23âÂÂ2||align=left| Rolando Wenceslao Mansilla | | | |align=left| |align=left| |- align=center |Win||22âÂÂ2||align=left| Jose Alberto Clavero | | | |align=left| |align=left| |- align=center |Win||21âÂÂ2||align=left| Richard Vidal | | | |align=left| |align=left| |- align=center |Loss||20âÂÂ2||align=left| Thomas Oosthuizen | | | |align=left| |align=left| |- align=center |Win||20âÂÂ1||align=left| Arnaldo Alcides Benitez | | | |align=left| |align=left| |- align=center |Loss||19âÂÂ1||align=left| Edwin Rodriguez | | | |align=left| |align=left| |- align=center |Win||19âÂÂ0||align=left| Claudio Ariel ÃÂbalos | | | |align=left| |align=left| |- align=center |Win||18âÂÂ0||align=left| Oscar Daniel Véliz | | | |align=left| |align=left| |- align=center |Win||17âÂÂ0||align=left| Ruben Eduardo Acosta | | | |align=left| |align=left| |- align=center |Win||16âÂÂ0||align=left| Dario German Balmaceda | | | |align=left| |align=left| |- align=center |Win||15âÂÂ0||align=left| Jorge RodrÃÂguez Olivera | | | |align=left| |align=left| |- align=center |Win||14âÂÂ0||align=left| MartÃÂn Abel Bruer | | | |align=left| |align=left| |- align=center |Win||13âÂÂ0||align=left| Ruben Eduardo Acosta | | | |align=left| |align=left| |- align=center |Win||12âÂÂ0||align=left| Richard Emanuel Moray Martinez | | | |align=left| |align=left| |- align=center |Win||11âÂÂ0||align=left| Ricardo Manuel Genero | | | |align=left| |align=left| |- align=center |Win||10âÂÂ0||align=left| Lucas Damián Molina | | | |align=left| |align=left| |- align=center |Win||9âÂÂ0||align=left| Victor Hugo Peralta | | | |align=left| |align=left| |- align=center |Win||8âÂÂ0||align=left| Osvaldo Antonio DÃÂaz | | | |align=left| |align=left| |- align=center |Win||7âÂÂ0||align=left| Crispulo Javier Andino | | | |align=left| |align=left| |- align=center |Win||6âÂÂ0||align=left|Ramón Argentino Guidetti | | | |align=left| |align=left| |- align=center |Win||5âÂÂ0||align=left| José Eduardo MartÃÂnez | | | |align=left| |align=left| |- align=center |Win||4âÂÂ0||align=left| Ramón Argentino Guidetti | | | |align=left| |align=left| |- align=center |Win||3âÂÂ0||align=left| Gabriel Arturo RamÃÂrez | | | |align=left| |align=left| |- align=center |Win||2âÂÂ0||align=left| Victor Hugo Peralta | | | |align=left| |align=left| |- align=center |Win||1âÂÂ0||align=left| Guillermo Pablo Armani | | | |align=left| |align=left|