This Article argues that consumer confusion plays a pervasive and important role in our trademark system. This argument directly challenges well-established orthodoxy. Numerous Supreme Court opinions and leading academics take the position that trademark law exists to reduce consumer confusion as much as possible. Indeed, courts generally justify aggressive creation and enforcement of trademark rights on the ground that these rights reduce consumer confusion or its economic equivalent, consumer search costs. Unfortunately, this construction of trademark law rests on a fundamental misunderstanding about how consumer confusion, the trademark system, and the operation of markets relate to one another. In particular, trademark orthodoxy conside...