The National Federation of Canadian University Students (NFCUS) was a national university student organization founded in 1926. It is the oldest and first national student organization in Canada. It was the primary student organization in Canada during the 1920s, 1930s (except for the Canadian Student Assembly created in 1937), 1940s (NFCUS ceased operations from 1940 to 1946) the 1950s, and the early 1960s.
NFCUS changed its name to the Canadian Union of Students (CUS) in 1963 and continued operations under that name until CUS ceased to exist in 1969. Several ad hoc committees operated on a national level for a few years until the National Union of Students in Canada was organized in 1972.