This paper examines two potential benefits of foreign-controlled plants in the Canadian manufacturing sector: the superior performance of foreign-controlled plants and their productivity spillovers to domestic plants. The paper finds that foreign-controlled plants are more productive, more innovative, more technology intensive, pay higher wages and use more skilled workers. This foreign-ownership advantage is found to be a multinational advantage. What matters for economic performance is whether plants belong to multinational enterprises (MNEs) rather than ownership per se. Canadian multinationals are as productive as foreign multinationals. We also find that MNEs have accounted for a disproportionately large share of productivity growth in the last two decades. Finally, we find robust evidence for productivity spillovers from foreign-controlled plants to domestic-controlled plants arising from increased competition and greater use of new technologies among domestic plants.