This article provides a conceptual framework for considering both the theoretical and methodological factors that underpin the successful validation of a competency framework. Drawing on educational assessment literature, this article argues that a valid competency framework relates to an interpretive judgement of the credibility of the claims made. To establish a credible approach to competency framework validation, there is a requirement to align the purposes of the competency framework, the claims developers make concerning the uses of the framework, and evidence collection methods to substantiate or challenge these claims. This article concludes with a template of questions for competency framework developers to consider in determining the range of potential claims to be made concerning their framework, and in understanding competency framework users and contexts.