Identification, substantiation, prosecution, and treatment of child sexual abuse often rely heavily on a disclosure from the victim in the absence of corroborating evidence. For some, disclosure can be impeded by developmental or motivational barriers, which compromises child safety and well-being. This study examines available research on the prevalence of sexual abuse disclosure in forensic interviews with children under 18 years as well as a range of factors that may influence the likelihood of disclosure. This meta-analysis confirms an upward trend in child sexual abuse disclosure prevalence. However, more than a third of children do not disclose when interviewed, with those who are younger, male, and without a prior disclosure at greatest risk. Important implications for forensic interviewing protocols and future research are discussed.