Andrew Logan was a pioneer of cardiothoracic surgery in Edinburgh. He was born in Dairsie, Fife on 6 November 1906. His family were farmers. He left school at 16 and went to St Andrews University, gaining an MA in 1926. He then turned to medicine, qualifying in 1929. He went on to train in Newcastle with George Mason, one of the pioneers of thoracic surgery and the pair carried out the first pneumonectomy in Britain. During the Second World War Logan was a military surgeon in Egypt. In 1948 he was invited to establish a thoracic surgical unit in Edinburgh and, with his colleagues, David Wade, Bobby McCormack and Philip Walbaum, provided an outstanding service for patients from south-east Scotland and further afield. At first they focused on surgery for tuberculosis and cancer of the lung and gullet, but later Logan gained an international reputation for developing an operation (transventricular mitral valvotomy) to correct the damage inflicted on the mitral heart valve during rheumatic fever. Following the introduction of the heart bypass machine, Logan also began to carry out open heart surgery. He carried out the world's second lung transplant. On his retirement in 1972, he left Edinburgh and joined Ben Le Roux in Durban, South Africa, where he taught for more than a decade. He was president of the Society for Cardiothoracic Surgery and the Scottish Thoracic Society. He was an honorary fellow of the American Thoracic Society. In 1974 he was awarded an honorary DSc by St Andrews. Outside medicine, he was interested in literature and language, the arts and the Scottish countryside. During the Second World War, he met and married Jo Littlewood. She predeceased him in 1980. He died on 9 September 2005, aged 98, and was survived by his two daughters, his son (who is also a surgeon), his grandchildren and great-grandchildren.