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Objectives: To investigate the association between maternal cervical cancer (CC) screening status and child human papillomavirus (HPV) vaccination uptake. To understand if child sex or social deprivation index (SDI) modify this association., Methods: We used a national cohort of children linked to at least one parent using electronic health record (EHR) data from a network of community health centers across the United States. We used SDI scores and child sex as moderating variables. We performed the analysis (1) for the whole sample (with SDI and child sex added as covariates), (2) stratified by SDI quartile (with child sex added as a covariate), and (3) stratified by SDI quartile and child sex, to examine whether associations vary by SDI quartile and by child sex., Results: N = 52,919 linked mother-child pairs. Mother's receipt of CC screening was positively associated with the linked child's odds of receiving HPV vaccination [adjusted odds ratio (AOR) 1.39, 95% confidence interval (CI) 1.32, 1.47]. Neither sex or SDI modified this association. There were no significant differences in odds of HPV vaccination in children between SDI quartiles or between male and female children., Conclusions for Practice: An effective way to improve rates of HPV vaccination among children and adolescents may be to target attention towards increasing CC screening rates among mothers. Further, focusing resources and efforts on CC screenings and care of both mothers and their children may be more worthwhile than isolated efforts targeting HPV vaccination for children and adolescents., Competing Interests: Declarations Conflict of interest The authors have no conflict of interest to disclose. Ethical Approval This study was approved by the Oregon Health and Science University Institutional Review Board [ID#: STUDY00019958]. Consent to Participant The IRB approved a waiver of consent due to the low risk posed to patients. Consent for Publication Not applicable., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)