The 7-item Dysmorphic Concern Questionnaire (DCQ; Oosthuizen et al., 1998) is designed to screen for, and quantify the degree of, dysmorphic concern in an individual. Dysmorphic concern describes an individual’s preoccupation with certain features of their physical appearance (e.g., hair, skin, nose, genitalia). Excessive levels may cause clinically significant distress and functional impairment, leaning to a diagnosis of body dysmorphic disorder (BDD). However, the DCQ is not a diagnostic tool for BDD; rather, it is a dimensional measure of dysmorphic concern and a screening tool with validated cut-offs for both clinically relevant appearance concern and BDD. The DCQ can be administered online or in-person to adolescents and adults and is free to use. This chapter first discusses the development of the DCQ and then provides evidence of its psychometrics. More specifically, the DCQ has a unidimensional factor structure within exploratory and confirmatory factor analyses. Internal consistency reliability, convergent validity, discriminant validity, and structural validity support the use of the DCQ. Next, this chapter provides the DCQ items in their entirety, instructions for administration and scoring, and the item response scale. Links to available translations are included. Logistics of use, such as permissions, copyright, and contact information, are available for readers.