In 2014, when Lucy Sargisson was promoted to professor in the School of Politics and International Relations, at the University of Nottingham, she became the first and, so far, only, professor of utopian studies. This choice symbolized the centrality of utopianism to her life, thought, and educational practice. In three books, each in their own way groundbreaking, a fourth book co-authored by one of us, and in important articles, her work falls into four primary areas: political theory, feminism, environmentalism, and intentional communities, with much of her work intersecting two, three, or even all four. And in all her work, she brings the lens of utopianism to bear on the subject and, in doing so, illuminates both utopianism and the subject at hand. The volume honors Sargisson's contributions to the field of utopian studies, with contributions by Ibtisam Ahmed, Raffaella Baccolini, David M. Bell, Suryamayi Clarence-Smith, Chris Coates, Elena Colombo, Davina Cooper, Rhiannon Firth, Ruth Levitas, Sarah Lohmann, Almudena Machado-Jiménez, Dunja M. Mohr, Tom Moylan, Robyn Muir, José Reis, Lyman Tower Sargent, Lucy Sargisson, Simon Spiegel, Maria Varsam, and Laura Winter.