"An Eclipse of Evil" is the title to the twenty-fifth issue of the Werewolf by Night ongoing comic book series published by Marvel Comics. The story was written by Doug Moench with artwork and inks by Don Perlin. It was colored by Linda Lessmann and lettered by Dave Hunt. It was edited by Roy Thomas. The cover art illustration was rendered by Gil Kane and Mike Esposito. This issue shipped with a January, 1975 cover date and carries a cover price of .25 cents per copy.