Resumen: El artículo analiza la eclesiología de Marsilio de Padua. Se intenta demostrar, primero, que su propuesta eclesial se explica mejor por las circunstancias vividas por el autor que por su contexto histórico; y segundo, que su ideal de Iglesia no era realizable en su tiempo. Palabras clave: Conciliarismo, eclesiología, potestad apostólica, soberanía. Abstract: This paper analyzes Marsilio of Padua’s ecclesiological thought. It tries to prove, fi rst, that his proposal is better understood by considering the author’s personal circumstances than by his historical context; and second, that his Church ideal was impossible to achieve during his time. Keywords: Conciliarism, eclesiology, apostolic power, sovereignty