Sun Trails was a science fiction fanzine by Arthur Louis Joquel II.
It was a mimeographed fanzine published in Los Angeles, California, U.S.A. Only two issues of Sun Trails appeared, both in 1941, the first in February and the second in October. In the first issue the editor is embroiled in a controversy with Isaac Asimov, and by the second issue it has been resolved. It also includes articles on science fiction fans, an article on graphology, and a note mentioning his intention to create an orchestration for Tigrina's "Hymn to Satan".
Contributions of art work came from Ray Bradbury (Futuria Fantasia).
Arthur Louis Joquel II also published FMZ Digest.