The Committee on National Statistics (CNSTAT) appreciates the time, effort, and valuable input of the many people who contributed to the workshop on confidentiality of and access to research data and to the preparation of this report. We would first like to thank those who made presentations, which, along with the background papers prepared for the workshop, helped identify many of the key issues in this area. The comments made by attendees contributed to a broad-ranging exchange of ideas that is captured in this summary report. We are also thankful for the additional input provided by participants on early report drafts. Thanks are due especially to Norman Bradburn, former.