The postpartum is a vital period for women, newborns, spouses, parents, caregivers, and families. Regarding the importance of postpartum care and the lack of comprehensive and up-to-date clinical guidelines in the country of Iran, the postpartum clinical guidelines have been adapted. Cultural adaptation was conducted in three stages. In the first stage, the adaptation team was formed and the process was approved. During the second stage, a systematic literature review was conducted using international databases to identify English-language clinical guidelines published within the last 10 years. Out of 17 guidelines and documents initially selected, 5 guidelines meeting the inclusion and exclusion criteria and published within the last 5 years were chosen following a thorough review by the search team. In the secondary selection, the guidelines were investigated by two subject-matter experts based on AGREE II Checklist, and regarding the high evaluation score obtained by the WHO Recommendations on Postnatal Care of the Mother and Newborn (2022), and the National Institute for Health and Care Excellence (NICE,2021) guideline for postnatal care were selected for cultural adaptation. In the third stage, the opinions of experts from all over the country were collected and scored using the Delphi method, and a final guideline was formulated. The adapted postpartum clinical guideline has offered 56 recommendations. The recommendations are categorized into four major themes including mother care, newborn care, health system and health promotion interventions and post caesarean care. Applying evidence-based recommendations for the care of mothers and babies in the postpartum period will enhance the health system, promote the provision of care after vaginal and caesarean births, and ensure a positive postnatal experience for mothers, fathers, babies, and families.