Abstract: Organizational consensus, while appearing productive, often masks critical decision-making vulnerabilities. This article examines the phenomenon of false consensus in organizational settings, exploring how apparent agreement can signal groupthink, power asymmetries, or psychological safety deficits rather than genuine alignment. Drawing on social psychology, organizational behavior, and decision science research, we analyze the organizational and individual costs of unchallenged consensus, including strategic blind spots, innovation suppression, and erosion of employee voice. Evidence-based interventions are presented, spanning structured dissent protocols, psychological safety cultivation, decision process redesign, and governance mechanisms that institutionalize productive conflict. The analysis integrates empirical findings with practitioner cases across healthcare, technology, aviation, and financial services sectors, demonstrating how leading organizations transform consensus culture into constructive challenge systems that improve decision quality and organizational resilience.