Wilum Hopfrog Pugmire (born William Harry Pugmire, 1951–2019) was a writer of weird fiction and horror fiction based in Seattle, Washington. His works typically were published as W.H. Pugmire (his adopted middle name derives from the story of the same title by Edgar Allan Poe) and his fiction often paid homage to the lore of Lovecraftian horror. Lovecraft scholar and biographer S.T. Joshi described Pugmire as "the prose-poet of the horror/fantasy field; he may be the best prose-poet we have" and as one of the genre's leading Lovecraftian authors.

Wilum lived in Seattle, WA and wrote Cthulhu Mythos fiction full-time. He was the self-proclaimed "Queen of Eldritch Horror". Writing weird fiction was his life, but congestive heart failure slowed his writing. He considered his finest books to be Some Unknown Gulf of Night (Arcane Wisdom Press 2011), Uncommon Places (Hippocampus Press 2012) and The Tangled Muse (Centipede Press 2011).