Manfred Gräber is an Italian luger who competed during the late 1980s and 1990s. A natural track luger, he won two medals in the men's doubles event at the FIL World Luge Natural Track Championships with a gold in 1994 and a silver in 1998.
Gräber found better success at the FIL European Luge Natural Track Championships where he won five medals. This included four medals in singles (gold: 1987, 1995; silver: 1997, bronze: 1989) and one in doubles (silver: 1989).