Chronic obstructive pulmonary disease (COPD) is the most common indication for adult single lung transplantation. These patients commonly have one or more risk factors for coronary artery disease. Traditionally previous lung transplantation has been considered a contraindication to coronary artery bypass grafting (CABG). This report describes a case of CABG 3 yr after single lung transplantation and briefly discusses the risks of cardiac surgery in lung transplant patients.