Economists in the Federal Trade Commission’s Bureau of Economics perform economic analysis in support of the Commission’s dual missions to protect consumers and competition by preventing anticompetitive, deceptive, and unfair business practices through law enforcement, advocacy, and education. This article first presents summaries of analyses economists performed to estimate the consumer harm from two different types of deception involving misleading information about lease terms and suppression of negative product reviews. The essay next turns to economic analysis of mergers, first considering vertical issues that arose in a semiconductor merger and then, finally, a discussion of how complementarity between hospitals may impact the analysis of hospital mergers.