Harold Warner Munn (November 5, 1903 – January 10, 1981) was an American writer of fantasy, horror and poetry, best remembered for his early stories in "Weird Tales". He was an early friend and associate of authors H. P. Lovecraft and Seabury Quinn. He has been described by fellow author Jessica Amanda Salmonson, who interviewed him during 1978, as "the ultimate gentleman" and "a gentle, calm, warm, and good friend." He was known for his intricate plotting and the careful research that he did for his stories, a habit he traced back to two mistakes made when he wrote his early story "The City of Spiders".