John Wiswell is an American science fiction and fantasy author. His short fiction and novels have received recognition from major speculative fiction award bodies. Wiswell's short story "Open House on Haunted Hill" won the 2020 Nebula Award for Best Short Story. His debut fantasy novel, Someone You Can Build a Nest In, was released in April 2024 and went on to win the Nebula Award for Best Novel and the Locus Award for Best First Novel.