Seizing opportunities, inventing new products, transforming markets--entrepreneurs are an important and well-documented part of the private sector landscape. Do they have counterparts in the public sphere? The authors argue that they do, and test their argument by focusing on agents of dynamic political change in suburbs across the United States, where much of the entrepreneurial activity in American politics occurs. The public entrepreneurs they identify are most often mayors, city managers, or individual citizens. These entrepreneurs develop innovative ideas and implement new service and tax