Mariano Gonzalo Andújar (born 30 July 1983) is an Argentine professional association footballer who plays in Serie A for Catania on loan from Napoli, as a goalkeeper.

On 24 January 2014, Napoli's official website posted that Andújar was in Naples completing a medical in preparation for his move to the Italian club. Four days later a co-ownership deal was reached with Andújar being loaned back to Catania for the remainder of the season. He will join Napoli at the start of the 2014-15 campaign.