Abstract This article uses dreams, portents, and prognostications as an entry point into what some scholars have recently called ‘Ottoman exceptionalism’. Drawing on sources in Turkish and Arabic, it traces beliefs about the Ottoman dynasty and empire’s superiority, divine favour, and special role in history from the fifteenth to the eighteenth century. I begin with the ‘seeds’ of the topic in the empire’s early years and myths of origin, including a number of dream stories, before moving to full-scale political exceptionalism. Looking closer, I then identify an eschatological strand in the lead-up to the Islamic millennium that centred on the dynasty’s role in the end time. The millennium’s uneventful passing led to the dissolution of this strand but not of ideas about exceptionalism itself, which in later forms turned inward, depicting the empire as ‘eternal’ and projecting its rule to an undetermined future period.