Objectives: Families impacted by paediatric cancer are met with logistical, financial and psychological impacts, with severe acute respiratory syndrome coronavirus two creating additional barriers and stressors for these families. Connected Health (CH) may facilitate cancer care. The objective of the present study was to systematically review CH for families/informal caregivers affected by paediatric cancer. Methods: Using search terms relating to: (1) paediatric cancer, (2) family/caregivers and (3) CH, the databases of PsycINFO, Pubmed, EMBASE and Web of Science were searched. Inclusion criteria included an evaluation of CH technologies for supportive care for families/caregivers affected by paediatric cancer at any stage of treatment or survivorship. Results: Sixteen studies met inclusion criteria. CH was primarily web‐based (n ¼ 6), however smartphone applications (n ¼ 5), telehealth (n ¼ 2) and online groups (n ¼ 3) were utilised. Intervention areas included psycho‐social (n ¼ 6), health and information provision (n ¼ 8) and palliative care (n ¼ 2). Conclusions: While limited studies have evaluated the impact of CH on families living with paediatric cancer, emerging evidence suggests potential benefits. More evidenced‐based interventions are required.