Spontaneous coronary artery dissection is an extremely rare cause of myocardial infarction. It has been reported mainly in young women during or after pregnancy. The prognosis and treatment of coronary dissection are not clear. We report three cases of spontaneous coronary artery dissection in young women. One of them was pregnant and one was 2 weeks after delivery. The dissection involved the left anterior descending artery (LAD) in two cases and the left main coronary artery in one case. There was no evidence of atherosclerosis on angiography or intracoronary ultrasound in any of the patients. Two of the women were treated by stent implantation with excellent results. This is the first known report of successful coronary stenting of spontaneous coronary artery dissection. The pregnant woman was not a candidate for stent implantation and underwent implantation of the left internal mammary to the LAD without cardiopulmonary bypass. She completed her pregnancy uneventfully.