The "Lovecraft Circle" refers to a group of writers and friends who were influenced by the works of H.P. Lovecraft, an American author known for his contributions to the horror genre. This circle included notable figures such as Robert E. Howard, August Derleth, and Frank Belknap Long, who corresponded with Lovecraft and shared similar themes in their writing, particularly cosmic horror and the unknown. The members of the Lovecraft Circle often exchanged ideas and stories, helping to shape the genre of weird fiction. Their collaborations and mutual support contributed to the development of a shared mythos, which included elements like the Cthulhu Mythos, a fictional universe created by Lovecraft that continues to influence writers and creators today.