All cardiac surgical procedures performed in 81 German cardiac surgical units throughout the year 2006 are presented in this report, based on a voluntary registry which is organized by the German Society for Thoracic and Cardiovascular Surgery. In 2006 a total of 97,123 cardiac surgical procedures (ICD and pacemakers procedures excluded) have been collected in this registry. More than 9.6 % of the patients were older than 80 years compared to 8.4 % in 2005. Hospital mortality in 51,273 isolated CABG procedures (10.1 % off-pump) was 3.1 %. In 20,028 isolated valve procedures a mortality of 4.9 % has been observed. This registry will continue to be an important tool of the German Society for Thoracic and Cardiovascular Surgery enabling a continuous and voluntary quality assurance and illustrating the development of cardiac surgery in Germany.