Background: The challenge for nursing education is to prepare graduates to deal with the challenges of today's healthcare setting. The nursing profession and the public have an expectation for clinical nurse educators to provide and supervise safe competent patient care. One way of ensuring that this expectation is met is through the evaluation of the competencies and performance of clinical nurse educators as competent nursing practice is greatly influenced by competent clinical nurse educators. Objective: To assess core competencies and clinical performance level of academic nursing educators Settings: The study was carried out at the Faculty of Nursing, Damanhour University. Subjects: All available nursing educators at the time of the study enrolled in the nine scientific departments from lecturers to clinical instructors. Tools: Two tools were used. “The 8 NLN's (National League for Nursing) Core Competencies of Academic Nursing Educators' Questionnaire" and “Clinical Performance Evaluation observational checklist". Results: The results of this study showed that there were "a statistically significant relationship between the academic nursing educators' characteristics and their level of core competencies and clinical performance" and "a statistically significant relationship between the level of clinical performance and the level of 8 core competencies". Conclusion: Competencies are skills, knowledge, and behavior that are necessary for performing jobs. The competence of clinical nurse educators influences their ability to provide high-quality nursing education and thus affects the competence of new professionals in the field of nursing. So Competence of performance is important in education and the whole generation of nurses. Recommendations: Develop more training programs and courses for all nursing educators to advance their practices. Implement program assessment models that evaluate periodically all nursing educators' performance level. Providing a guidance book about clinical teaching competencies for nursing educators to teach competently according to the clinical training area.