Fedja Marušic (born 10 October 1971 in Solkan) is a Slovenian slalom canoeist who competed from the late 1980s to the mid-2000s (decade).
He won two silver medals in the K1 team event at the ICF Canoe Slalom World Championships, earning them in 1995 and 1999.
He also won a silver and a bronze in the same event at the European Championships.
Marušic also competed in two Summer Olympics, earning his best finish of 15th in the K1 event in Sydney in 2000.