This document discusses definitions and models of brand equity. It provides 4 key dimensions of brand equity definitions: brand presence in consumers' minds, influence on buying behavior, effects on market position and financial results, and financial value as an intangible asset. It also describes Franzen's model of mental, behavioral, and financial brand equity. Mental brand equity includes brand awareness, meaning, positioning, quality/price assessment, attitudes, and brand relationships. Several models for measuring brand equity are also summarized.