This chapter reviews research on business power in cities. The first part is a critical discussion of research on business participation in urban policymaking. We argue that the pluralist approach fails to distinguish between types of public policies. Nor does it take into account either the process by which policies surface or the interconnections among the different segments of the business community that have interests at stake. We then show how elite theorists, who adopt an expanded decisional, reputational, or network methodology, substan tially correct for these weaknesses. A flaw in the elite framework, however, is that it does not specify the organizational or class interests that lead distinct business groups to participate in the making of specific policies. One framework that attempts to cope with this problem-the growth machine approach-is considered.We conclude, however, that all three approaches suffer from a lack of attention to sources of business power that are not tied to participation. The second part of the chapter begins by outlining a framework that emphasizes economic dominance and the capacity to exit as alternative sources of power. Then we review evidence pertaining to this framework. Finally, we speculate about the relationship between these sources of power and the use of participa tion by different business interests.