Background: Intrapartum hemorrhage is a primary contributor to maternal morbidity worldwide. Nurses have a vital role in preventing intrapartum hemorrhage through their competences which directly impacts the standard of care and health results. Aim: Assess the effect of training program on nurses' competencies in preventing and controlling intrapartum hemorrhage. Design: Quasi-experimental research design was utilized. Setting: At Dar Sahet Elmar`Aa hospital and El-Hayah Port Fouad hospital in the city of Port Said. Subjects: Convenience sampling of all 57 staff nurses. Tools: A structured interview, a nurse's competency observational checklist, and an attitude likert scale were utilized to gather data. Results: About 48.2% of the nurses had satisfactory knowledge levels before receiving a training program, compared to 88.4% & 79% after and at one month follow up. Only 39.1% of the nurses had competent practice levels preprogram, compared to 81.8% & 75.4% after and at one month follow up. Additionally, 57.9% of the nurses prior a training program had positive attitude, compared to 94.2% and 90% after and at one month follow up. Moreover, overall practices scores of the studied sample had a positive statistical correlation with their total attitude scores. Conclusion: Following a competency training program, nurses' overall knowledge, practice, and attitude scores enhanced at post and at one month follow up compared to before. Additionally, overall practices scores of the studied sample had a positive statistical correlation with their total attitude scores. Recommendations: Continuous educational and training programs aimed at avoidance of intra-partum hemorrhage are ought to be applied for nurses in both governmental and nongovernmental sectors.