Gerti Pertlwieser is a retired Austrian slalom canoeist who competed in the late 1940s and the early 1950s. She won four medals at the ICF Canoe Slalom World Championships with three golds (Folding K-1: 1951; Folding K-1 team: 1949, 1951) and a bronze (Folding K-1: 1949).