This unique Handbook explores both the economics of the firm and the theory of the firm, two areas which are traditionally treated separately in the literature. On the one hand, the former refers to the structure, organization and boundaries of the firm, while the latter is devoted to the analysis of behaviours and strategies in particular market contexts. the novel concept underpinning this authoritative volume is that these two areas closely interact, and that a framework must be articulated in order to illustrate how linkages can be created. This interpretative framework is comprehensively developed in the editors' introduction, and the expert contributors – more than fifty academics of renowned authority – further elaborate on the linkages in the seven comprehensive sections that follow, encompassing: background; equilibrium and new institutional theories; the multinational firm; dynamic approaches to the firm; modern issues; firms' strategies; and economic policy and the firm. Bridging economics and theory of the firm, and providing both technical and institutional perspectives on real corporations, this path-breaking Handbook will prove an invaluable resource for academics, researchers and students in the fields of economics, heterodox economics, business and management, and industrial organization.