This chapter investigates the persistence and transformation of monarchical imaginaries in Mexico from the fall of Iturbide’s Empire to the eve of the French intervention. Far from disappearing after 1823, monarchism functioned as a political repertoire mobilized in response to both domestic instability and external threats. This chapter explores how constitutional monarchism became entangled with liberal discourses and how pro-monarchist conspiracies navigated shifting alliances with federalist and centralist factions. It also situates Mexican monarchism within the wider framework of imperial internationalism and diplomatic anxieties, arguing that monarchical projects were not merely nostalgic but also strategically imagined responses to geopolitical pressures and unresolved questions of legitimacy.