Sabrina Fernandes is a Brazilian sociologist, political economist, author and activist.

She has a PhD in Sociology and a Master's in Political Economy from Carleton University, Canada. She is currently a fellow with CALAS at the University of Guadalajara and Senior Research Advisor to the Alameda Institute. Previously, a Full Collaborating Researcher at the University of Brasília, visiting researcher with the Latin American Institute at Freie Universität Berlin, senior research fellow in the Department of Political Science at the University of Vienna, and a fellow of the International Research Group on Authoritarianism and Counter-Strategies of the Rosa Luxemburg Stiftung. She has geared her activist, research, and publishing work in the past years towards promoting political syntheses in the fragmented Brazilian Left with a focus on ecosocialism and its potential to foster resistance on the ground. She is the creator and producer of the digital communication project Tese Onze (“Thesis Eleven”), with over 400,000 subscribers across different online platforms and media output, including podcast and book club. The project bridges academic research and activist communication. She was a contributing editor at Jacobin Magazine, served as head consulting editor for Jacobin Brasil, and often participates with interviews and articles in a variety of outlets of broad readership. Her first book, Sintomas Mórbidos, on leftist fragmentation in Brazil, came out in 2019 by Autonomia Literária and her second book, Se quiser mudar o mundo, an introduction to radical politics, is already in its seventh printing by Editora Planeta. She also prepared a new edition, with introduction and notes, to Karl Marx and Friedrich Engels’ Communist Manifesto in Brazil.