Reiner Margreiter (born 26 June 1975) is an Austrian luger who competed from 1995 to 2006. He won two bronze medals at the 2003 FIL World Luge Championships in Sigulda, Latvia in both the men's singles and the mixed team events.
Competing in two Winter Olympics, his best finish was tenth in the men's singles event at Salt Lake City in 2002