With improved replacement therapy, people with haemophilia (PWH) live longer, with the consequent emergence of age-related chronic diseases not previously seen in haemophilia. The prevalence of cardiovascular disease and associated complications in older PWH appears to be on the rise. Management of myocardial infarction in a person living with severe haemophilia presents a particular challenge, as treatment options often include antiplatelet therapy, anti-coagulation and invasive procedures. Current guidelines for managing acute myocardial infarction are not specifically designed for people with bleeding diatheses such as haemophilia. We present a patient with severe haemophilia A on extended half-life factor VIII prophylaxis who developed an acute ST-elevation myocardial infarction (STEMI), discuss his clinical management and highlight lessons learned.