Logos frequently include textual and/or visual design elements that are descriptive of the type of product/service marketed by brands. However, knowledge about how and when logo descriptiveness can influence brand equity is limited. Using a multimethod research approach across six studies, the authors demonstrate that more (vs. less) descriptive logos can positively influence brand evaluations, purchase intentions, and brand performance. They also demonstrate that these effects occur because more (vs. less) descriptive logos are easier to process and thus elicit stronger impressions of authenticity, which consumers value. Furthermore, two important moderators are identified: the positive effects of logo descriptiveness are considerably attenuated for brands that are familiar (vs. unfamiliar) to consumers and reversed (i.e., negative) for brands that market a type of product/service linked with negatively (vs. positively) valenced associations in consumers’ minds. Finally, an analysis of the logos of 597 brands suggests that marketing practitioners might not fully take advantage of the potential benefits of logo descriptiveness. The theoretical contributions and managerial implications of these findings are discussed.