BackgroundIndividuals of reproductive age with cancer may experience reproductive concerns (RCs) due to impaired fertility and disrupted family planning, which can negatively impact their quality of life and psychological well‐being. There is limited research on interventions that mitigate the negative effects of RCs among individuals with cancer.ObjectiveThis systematic review aimed to identify and evaluate the effectiveness of interventions developed to mitigate RCs among individuals with cancer.MethodsThis systematic review was conducted following the Joanna Briggs Institute (JBI) Manual for Evidence Synthesis and reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) statement. A systematic search of nine English and Chinese electronic databases including PubMed, Cochrane Library, CINAHL Plus, Embase, PsycINFO, Web of Science, Wan Fang Data, Chinese National Knowledge Infrastructure (CNKI), and SinoMed, was conducted for relevant studies from inception to November 2023. Intervention studies designed to mitigate RCs among individuals with cancer were included. Two reviewers independently performed study selection, data extraction, and quality appraisal where JBI Critical appraisal tools were used. Narrative syntheses were conducted to summarize the characteristics and effectiveness of interventions due to high heterogeneity across studies.ResultsNine studies were included. Interventions were categorized into psychoeducational interventions (n = 6), couple‐based interventions facilitating open communication and intimate relationships (n = 2), and mindfulness‐based interventions (n = 1). A statistically significant reduction in RCs was observed in five psychoeducational interventions, two couple‐based interventions, and one mindfulness‐based stress reduction intervention. The effect sizes (Cohen's d) of the interventions on RCs varied substantially from 0.08 to 5.66.Linking Evidence to ActionPsychoeducation, couple‐based, and mindfulness‐based interventions demonstrated promising findings in mitigating RCs among individuals with cancer. However, more randomized controlled trials with larger sample sizes and rigorous designs are warranted to strengthen the current evidence.