Parental Self Efficacy (PSE) is a key predictor of positive parenting practices and child outcomes. The Karitane Parenting Confidence Scale (KPCS) is a global measure of PSE that has been validated for use with mothers, but not fathers. The aims of the study were to assess the construct validity and internal consistency reliability of the KPCS with 110 fathers of young children (aged 0–4 years) in an Australian parenting program. Confirmatory Factor Analysis (CFA) of the KPCS items revealed good model fit for a two-factor structure of parenting self-efficacy: self-efficacy for parenting tasks and self-efficacy for parental role. Overall KPCS reliability was strong, with each factor demonstrated to have acceptable internal reliability. Preliminary analysis suggests that the KPCS is a reliable and valid tool for use with fathers of children aged 0–4 years. Further validation of the KPCS in a larger sample of fathers is warranted.