The Body Image Shame Scale (BISS; Duarte et al., 2015) is a measure of internal and external shame focused specifically on body image. Internal shame includes negative self-evaluations and desires to hide or conceal the body. External shame includes an individual’s perceptions that others criticize and think negatively about their appearance and avoidance of social situations in which others may judge their physical appearance. The BISS has a 14-item adult version and a 9-item adolescent version. Both versions can be administered online or in-person and is free to use. This chapter first discusses the development of the BISS and then provides evidence of its psychometrics. More specifically, the BISS has a 2-factor structure (internal body shame, external body shame) within exploratory and confirmatory factor analyses along with a higher-order body shame factor. Internal consistency reliability, test-retest reliability, convergent validity, discriminant validity, and incremental validity support the use of the BISS. Next, this chapter provides the BISS items (both adolescent and adult versions) in their entirety, instructions for administration and scoring, and the item response scale. Links to known translations are included. Logistics of use, such as permissions, copyright, and contact information, are available for readers.