Objective: To analyze maternal, gestational, delivery, and neonatal factors associated with cesarean births without clinical indication, according to the Robson Classification System, in the state of Paraná. Methods: This was a cross-sectional, quantitative study involving live births in Paraná in 2019. Data analysis was conducted to determine absolute and relative frequencies. Associated factors were initially identified through univariate analysis, selecting independent variables with a p-value <0.20. These variables were then included in multiple logistic regression analyses using the stepwise forward method, retaining those with a final p-value <0.05. Results: Among the 153,469 births, 62.2% were cesarean deliveries, with 74.6% occurring without any clinical indication. The Robson cluster with the highest number of births was Group 5 (27.75%), followed by Group 2 (17.40%). Logistic regression identified independent factors associated with cesarean births without indication, including maternal age ≥35 years, having a partner, previous miscarriage, hospital delivery, absence of previous normal delivery, and paternal age ≥30 years. Conclusion: There was a significant prevalence of cesarean births without clinical indication in Paraná, particularly in Robson Groups 1 to 5. Nursing practice should promote awareness among healthcare professionals regarding the importance of respecting the physiology of childbirth, minimizing unnecessary interventions, and fostering woman-centered care.