The Gandalf Awards were awarded alongside the Hugos for a few years. They were for fantasy fiction although, as you will see, the dividing line between fantasy and SF is once again somewhat blurred. Two different awards were given.
1979 The White Dragon by Anne McCaffrey
1978 The Silmarillion by J. R. R. Tolkien (ed. by Christopher Tolkien)
1980 Ray Bradbury
1979 Ursula K. Le Guin
1978 Poul Anderson
1977 Andre Norton
1976 L. Sprague de Camp
1975 Fritz Leiber
1974 J. R. R. Tolkien
"Hugo Award" is a service mark of the World Science Fiction Society, an unincorporated literary society.