This is the protocol for a Campbell systematic review. The objectives are as follows. Identify and map all existing primary studies and systematic reviews (published and unpublished) on social, emotional, educational, and behavioural issues in families affected by parental incarceration, creating a live, searchable and publicly available Evidence and Gap Map. We will focus on children affected by parental incarceration, their caregivers, and incarcerated parents. This map will include primary studies, reviews as well as intervention and evaluation papers. The purpose of the current research is to provide researchers, practitioners, and policymakers with a map of available evidence, identifying areas that warrant additional research or synthesis, as well as highlighting gaps in our knowledge.