Introduction Diabetes mellitus (DM) is highly prevalent among Middle Eastern patients admitted with acute coronary syndrome (ACS) or who undergo percutaneous coronary intervention (PCI). This study used data from the First Jordanian PCI Registry (JoPCR1) to determine the short-and long-term outcomes in a subgroup of diabetic patients within a large PCI population. Methods JoPCR1, a prospective, multicenter study of consecutive patients who underwent PCI from January 2013 to February 2014, assessed the incidence of major cardiovascular events (cardiac mortality, stent thrombosis, major bleeding events and coronary revascularization) in diabetic compared with nondiabetic patients from the index hospitalization to 1 year of follow-up. Results Of 2426 patients enrolled, 1300 (53.6 %) were diabetics. Compared with nondiabetic patients, diabetic Keywords Diabetes mellitus Á Cardiovascular outcomes Á Percutaneous coronary intervention Á Middle Eastern patients