This article explores child welfare workers’ experiences of children’s participation in decision making in the child protection system. The systematic review follows the principles of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement and includes 12 peer-reviewed articles published in academic journals from 2009 to 2019. Findings indicate that children’s participation in decision making is generally limited or nonexistent. The age of the child is an important determining factor concerning whether the child is given the opportunity to participate in decision making. Potential harm for children that may result from participation is considered when deciding on whether to include a child in the decision-making process.