ObjectiveThis study aimed to determine the effect of progressive relaxation exercises (PRE) and transcutaneous electrical nerve stimulation administered to women delivering via cesarean delivery on acute pain, breastfeeding success, and comfort levels.MethodsThis is a single‐blind, randomized controlled study. This study was carried out in the obstetrics and gynecology clinic of a university hospital affiliated with the Ministry of Health in Turkey between August 20, 2018 and April 15, 2019. A total of 120 participants were randomly assigned to one of four groups, which included a transcutaneous electrical neural stimulation (TENS) group, a PRE group, a combined intervention group, and a control group. Data were collected with a Data Collection Form, The Visual Analogue Scale, The LATCH Breastfeeding Diagnostic Tool, and The Postpartum Comfort Scale.ResultsAccording to the findings of the study, it was determined that pain significantly decreased and comfort increased after having a cesarean delivery in all three intervention groups compared to the control group (p < 0.05). Regarding the breastfeeding success, while there was no statistically significant change in this behavior in the TENS group, it was significantly better in the PRE group and the combined intervention group, where TENS and PRE were administered together (p < 0.05).ConclusionsAccording to our study results, we recommend that TENS and PRE should be employed together after a cesarean delivery as safe non‐pharmacological methods in pain management, eliminating breastfeeding problems, and increasing comfort.