Background: Medical care advancements have increased the survival rates of children with complex medical conditions (CMC). Parents/caregivers of these children experience a range of positive and negative emotional experiences as a result. This population experiences an increased risk of mental health concerns, versus the public; however, there is a dearth of available mental health interventions. Objectives: To summarize extant research on interventions targeting the mental health of parents/caregivers of children with CMC. Eligibility Criteria: Peer-reviewed, assessed parent/caregiver, child was 0-12 years old with a persistent CMC, participants received an intervention for their mental health, written in English, and published January 1, 2000 to May 19, 2020. Sources of Evidence: The PsycINFO, Medline, CINAHL, Web of Science, PubMED, and Social Services Abstracts databases were searched. Charting Methods: Articles were screened following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines for scoping reviews and Arksey and O’Malley’s five-stage method of scoping reviews. Results and Conclusions: Nine studies were included, each assessing parent mental health and/or process and feasibility outcomes. Favorable reductions in depression, anxiety, stress, and an increase in quality of life, psychological flexibility, mindfulness, coping skills, and shared management were found; however, results were mixed. Parental support/education and parent education/child developmental supports appear important in the treatment of stress and quality of life, respectively. Parental stress interventions appear more effective when provided near the child’s CMC diagnosis. Findings highlight the need for further research to improve the mental health of parents of children with CMC.