Gerhard Mühlbacher (born 13 March 1975) is an Austrian luger who has competed since 1998. A natural track luger, he won four medals at the FIL World Luge Natural Track Championships with one gold (Mixed team: 2007), one silver (Mixed team: 2011), and two bronzes (Men's doubles: 2003, 2007).
Mühlbacher also earned two medals at the FIL European Luge Natural Track Championships with a silver (men's doubles: 2006) and a bronze (mixed team: 2010).