The conventional wisdom is that there have been two globalizations in the modern era. The first began around 1870 and ended in 1914. The second began in 1945 and is still under way. This paper challenges that view and argues that there have been three globalizations, not two. The first half of the paper provides empirical evidence for the three-globalizations hypothesis. The second half discusses its analytical implications. The Victorian first globalization and the Keynesian-era second globalization were driven by gains from trade, and those gains increased industrialized country real wages. The neoliberal third globalization has been driven by industrial reorganization motivated by distributional conflict. Trade theory does not explain the third globalization; capital's share has increased at the expense of labor's; and there can be no presumption of mutually beneficial country gains from the third globalization.