Eldon Davis Rathburn (21 April 1916 – 31 August 2008) was a Canadian film composer who scored over 250 films during his thirty-year tenure as a staff composer at the National Film Board of Canada.
Known as "the dean of Canadian film composers", Rathburn composed music for documentaries, short films, as well as such feature films as Drylanders (1963), Nobody Waved Good-bye (1964), Waiting for Caroline (1969) and Who Has Seen the Wind (1977).
Rathburn was the subject of a 1995 NFB documentary by Louis Hone titled Eldon Rathburn: They Shoot...