Adolescents and students are faced with the developmental task of becoming prepared for a career and master future career transitions. Existing research has investigated a range of concepts relating to career preparedness, including predictors and outcomes. However, this body of work is fragmented as a number of different conceptualizations and measurements related to career preparedness exist. Thus, the goal of this review is to provide an overview of the different concepts that have been used to describe and measure career preparedness. Based on a comprehensive review of empirical articles on maturity, readiness, adaptability, preparedness, and preparation, we propose an organizing framework of the diverse attitudes, knowledge and competencies, and behaviors required for career preparedness. We also review the empirical research on predictors and outcomes of career preparedness. We close by identifying issues in the conceptualization and measurement of different constructs and provide suggestions for future research, and implications for theory and practice.