Juventus striker Alessandro Matri (Photo: Reuters)
Centre-back Bonucci had joined the Old Lady of Turin from Bari in June 2010 while Matri was acquired from Cagliari in January 2011.
The news comes just a few days after full-back Paolo De Ceglie also signed an extension for a further five seasons.
Bonucci scored the opening goal in Sunday's 3-0 Serie A win over Napoli to close Juve's gap on league leaders AC Milan to just two points.
Matri is the club's top scorer this season with 10 goals in 26 league games.
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