Federico Grabich (born 26 March 1990) is an Argentine competitive swimmer.

At the 2012 Summer Olympics he finished 41st overall in the heats in the Men's 100 metre backstroke and failed to reach the semifinals.

At the 2015 Pan American Games, Grabich won the 100m Freestyle, setting a new Argentine record.

At the South American Games he won ten medals (two of them were gold).

At the 2015 Pan American Games, Grabich won the 100m Freestyle, setting a new Argentine record.