The Journal of Regulation’s annual symposium on March 17, 2011 examined the theme of Neutrality in systems of economic regulation. After preliminaries on the definition of neutrality and neutral action, which were the common theme linking all speakers’ contributions, the first part of the colloquium explored the general aspects of neutrality in regulated industries, such as the neutrality of standards or the relationship between neutrality and legal categories, impact studies, or procedural techniques. The second part of this event raised more specific points, such as the interference between neutrality and the globalization of regulated industries, the question of regulators’ neutrality, and of net neutrality that some regulators wish to raise to the level of a general principle.