Dysfunctional beliefs are among the most prevalent, severe difficulties many individuals face in the process of making career decisions. The goal of the present study was to develop and test a new multidimensional measure of Dysfunctional Career Decision-Making Beliefs ( DCB). The DCB questionnaire elicits individuals’ beliefs in five aspects of career decision-making: the role of chance or fate, the criticality of the decision, the role of significant others, the role of professional help, and perceived gender barriers. Study 1 used exploratory factor analysis and cluster analysis to test the psychometric properties and the five-factor structure of the DCB with a sample of 937 young adults deliberating about their future career. Study 2 used confirmatory factor analysis to validate the structure of the DCB with another sample of 1,251 young adults and analyzed the associations between individuals’ DCB Scale scores and career decision status to test its concurrent validity. The results supported the proposed multidimensional model of dysfunctional beliefs. Implications for future research and career counseling are discussed.