Enough voluntary initiatives for nanotechnology have been implemented so they can be looked at together, in a comparative sense, and historically, in terms of their relationship to programs that have preceded them. This report provides that analysis for the first time. In Voluntary Initiatives, Regulation, and Nanotechnology Oversight: Charting a Path, Dr. Daniel Fiorino provides a taxonomy of the various types of voluntary initiatives (past and present) and the partnerships that underlie them, as well as an assessment of the factors that are most likely to contribute to program success. As nanotechnologies advance, along with other emerging technologies, voluntary programs will continue to play an important role in the governance portfolio. For this reason, evaluating and learning from these endeavors will remain critical to better oversight. This report is an important contribution to that learning process.