PT Journal AU Buráň, J TI Was Karl Popper a Civic Republican? SO Aither PY 2025 BP 36 EP 61 VL 17 IS 2 DI 10.5507/aither.2025.006 AB Karl Popper has hitherto been understood as either a liberal or, at best, as a sui generis specimen of socialism. I argue that his political thought bears a remarkable resemblance to what Philip Pettit and Quentin Skinner have dubbed the Italo-Atlantic branch of republicanism. Viewing Popper through a republican lens would reveal that there is a robust and coherent theory behind his attack on the "enemies of the open society". The paper focuses successively on the concept of freedom understood as nondomination, on the role of the state and the rule of law, and on democracy. That Popper might be classified "as a republican, in something close to Pettit's sense" has been suggested in passing by Jeremy Shearmur on a handful of occasions. The present article, however, should be the first to focus on the similarities in detail. ER