Objectives. This study assessed the prevalence and effectiveness of smoking cessation interventions for women of childbearing age in public health clinics.Methods. Smokers in prenatal, family planning, and well-child services in 10 public health clinics (n = 1021) were interviewed 5 to 8 weeks after a medical visit to assess their exposure to smoking cessation interventions and smoking cessation outcomes.Results. Depending on clinic service and intervention component (poster, video segment, provider advice, booklet), 16% to 63% of women reported exposure to an intervention component during their visit. Women in prenatal services received more interventions and had better outcomes than those in the other services.Conclusions. Exposure to more interventions increased readiness and motivation to quit and the number of actions taken toward quitting. (Am J