Marcela Sadilová (born 26 February 1967 in Prague) is a Czech slalom canoeist who competed from the early 1990s to the late 2000s. She won four medals in the K1 team event at the ICF Canoe Slalom World Championships with a gold (2005) and three silvers (1991, 2002, 2007). She also won three golds and one silver at the European Championships.