Joan Lyn Slonczewski is an American microbiologist at Kenyon College and a science fiction writer who explores biology and space travel. Her books have twice earned the John W. Campbell award for best science fiction novel: The Highest Frontier (2012) and A Door into Ocean (1987). With John W. Foster she coauthors the textbook, Microbiology: An Evolving Science (W. W. Norton). She explores her ideas of biology, politics, and artificial intelligence at her blog Ultraphyte.