Pablo Cesar Barrientos (born 17 January 1985) is an Argentine former professional footballer who played as an attacking midfielder.

[2] On 30 May 2009, Calcio Catania officially signed Barrientos from FC Moscow on a four-year contract until June 2013.

[4] After the loan spell during which he scored five goals in seven league matches, Barrientos returned to Catania in July 2011 and became a key component to the team under new head coach, Vincenzo Montella.

During the 2012-13 Serie A campaign, Barrientos was a key part of Rolando Maran's first team, scoring 5 goals in 27 league appearances.

He formed part of an all-Argentine attack force with Gonzalo Bergessio, Alejandro Gómez, and Lucas Castro for the Sicilian club that has seen i rossazzurri push for the European places.

In July 2014 it was reported that Barrientos would return to San Lorenzo, the team in which he made his debut as a professional player.