Carlos Ignacio Fernández Lobbe (born 20 November 1974 in Buenos Aires)[2] is an Argentine rugby union coach and former player.

He has also represented Argentina on numerous occasions, including at the 1999, 2003 and 2007 Rugby World Cups.

He previously played for Sale Sharks, Castres, Bordeaux and the Liceo Naval club, moving to Northampton Saints for the 2008–09 season, where he made his debut against Worcester Warriors.

In the 2005–2006 season, Lobbe started the final as Sale Sharks won their first ever Premiership title.

In September 2010, it was announced that Fernández Lobbe would come out of retirement to join Bath as injury cover for the remainder of the 2010–11 season.