"THIS COMPILATION OF Selected Technical Papers, STP1615, Whole Building Air Leakage: Testing and Building Performance Impacts, contains peer-reviewed papers that were presented at a symposium held April 8-9, 2018, in San Diego, California, USA. The symposium was sponsored by ASTM International Committee E06 on Performance of Buildings and Subcommittee E06.41 on Air Leakage and Ventilation Performance"--Foreword.