In this review, we explore "economic imperialism," a concept that captures the phenomenon of a single discipline's power over so many facets of social life and policy--including education. Through a systematic search, we examine how economic imperialism has been conceptualized and applied across fields. We uncovered three key, interconnected elements of economic imperialism that hold relevance for education research. First, economics has colonized other disciplines, narrowing the lens through which policymakers have designed education reforms. Second, an overreliance on economic rationales for human behavior neglects other explanations. Third, a focus on economic outcomes of education has subjugated other important aims of education. We share implications for researchers to use economic theory in ways that are interdisciplinary but not imperialist.