Ludwig Siebert (born 25 September 1939) is a West German former bobsledder who competed during the 1960s. He won two gold medals in the four-man event at the FIBT World Championships (1962, 1966). The gold in 1966 was awarded following a crash that killed his fellow athlete Toni Pensperger during the four-man event. Pensperger was posthumously awarded the gold medal while Siebert and his surviving teammates Helmut Werzer and Roland Ebert received their golds as well.