Fedja Marušič (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.

Marušič also competed in two Summer Olympics, earning his best finish of 15th in the K1 event in Sydney in 2000.

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