This article has as its theme the celebrations of the 500th anniversary of the Protestant Reformation in Brazil, in 2017, an event that, despite its importance, has been little researched so far. In this sense, using sources housed in official, confessional and press websites, it is intended to characterize the commemoration in some of its fundamental lines, also discussing the meanings conferred to it by its main organizers. From the analysis carried out, it is clear that, in addition to protocol formality, the commemoration would assume broader conjunctural meanings, which would be articulated with the correlations of forces and religious and political disputes that were stirring in the country at that time.