Inappropriate sexual behavior (ISB) is a common, but understudied, issue for individuals diagnosed with developmental disabilities (DD), intellectual disability (ID), and/or acquired brain injuries (ABI). We conducted a systematic review to identify, analyze, and synthesize published behavior-analytic approaches to intervention for ISB in DD, ID, or ABI populations. Twenty-three studies employing single-subject research methodology were identified and evaluated using quality indicators described by Horner et al. (2005). Results of our analysis suggest insufficient evidence exists to consider any specific response-suppression technique an overarching treatment for decreasing ISB using the Horner et al. criteria. However, broadly speaking, behavior analytic approaches have been highly effective. Practitioners should consider function-based intervention and draw from studies identified as having strong supporting evidence.