This special double issue of Colloquy: Text, Theory, Critique arises from the (Un)Ethical Futures: Utopia, Dystopia and Science Fiction conference, held 15–17 December 2017 at the Monash University Law Chambers in Melbourne. The conference was organised by an interdisciplinary team of postgraduate students from Monash University and the University of Warwick, including Colloquy editors. Participants explored a wide range of topical issues in science fiction and utopian studies, with a strong emphasis on the ethical dimensions of these genres. This special issue carries forward the conference’s focus on the ethical dimensions of utopia, dystopia and science fiction with eight thought-provoking research articles and two original short stories.