Increasing numbers of childhood cancer survivors enter adulthood and encounter decisions surrounding parenthood. However, limited research has systematically examined how childhood cancer may influence parenthood attitudes among survivors. Methods: Adult survivors of childhood cancer, who had or wanted to have children (N = 77; M age = 30.2 years, range: 22-43; 91% White), rated their perceived impact of cancer at enrollment and parenthood attitudes using the ''Attitudes to Parenthood After Cancer Scale'' 2 years later. First, internal consistencies for the parenthood measure were examined, and modified subscales were proposed. Second, hierarchical stepwise regressions analyzed the contribution of background factors and cancer's impact on parenthood attitudes. Results: Reevaluation of parenthood items yielded four subscales with improved internal consistency (a's > .78): improved parenting due to cancer, no children due to cancer, concerns about a (potential) child's health, and parenthood desire irrespective of own health concerns. Already having children (n = 38) was related to more favorable ratings on most subscales. Older age was associated with perceiving improved parenting due to cancer (r = .24) and shorter time since diagnosis was related to considering having no children due to cancer (r = -.23). Hierarchical stepwise regressions reconfirmed parenthood status as related to more favorable parenting attitudes. Cancer preoccupation and perceiving cancer as a most difficult life experience predicted more concerns toward parenthood (R 2 = .044-.216). Conclusions: Parenthood attitudes were more favorable among survivors with children, who were older, and/or further into survivorship. Survivors burdened by their cancer experience reported more concerns about parenthood. Childhood cancer may shape parenthood perceptions positively and negatively, warranting further research to inform interventions.