Moral competence among adolescents can be approached in terms of good character. Character is a multidimensional construct comprised of a family of positive traits manifest in an individual's thoughts, emotions and behaviours. The Values in Action Inventory for Youth (VIA-Youth) is a self-report questionnaire suitable for adolescents that measures 24 widely valued strength of character. Data from several samples bearing on the internal consistency, stability, and validity of the VIA-Youth are described, along with what is known about the prevalence and demographic correlates of the character strengths it measures. Exploratory factor analysis revealed an interpretable four-factor structure of the VIA-Youth subscales: temperance strengths (e.g., prudence, self-regulation), intellectual strengths (e.g., love of learning, curiosity), theological strengths (e.g., hope, religiousness, love), and other-directed (interpersonal) strengths (e.g., kindness, modesty). The uses of the VIA-Youth in research and practise are discussed along with directions for future research.