Background: Leadership influences staff nurse's creativity and motivation thus, leaders play a critical role in enabling and supporting the awakening and fostering of creativity and motivation of staff nurses. Employees present high levels of creativity when they are motivated. Aim: To measure the effectiveness of the authentic leadership training program on nurses' staff creativity and motivation. Subjects and Methods: A quasiexperimental research design was utilized, including all head nurses (36) and staff nurses (246) who were worked in the same unit of Specialized Medical Hospital, Mansoura University, Egypt. A self-administered questionnaire including four scales for Authentic leadership style knowledge questionnaire, Authentic leadership self-assessment scale, Creativity scale, and Motivation scale. Results: there was an improved response related to the head nurse's authentic leadership post-program implemented, motivational and creativity levels increased after the program of authentic leadership style. This increase persists three months after the program. There is a highly statistically significant difference in the total score of three times the program implemented. Conclusions: Head Nurses, who had good knowledge about authentic leadership, showed an increased nurse's staff creativity and motivation, which enhance the organization's success. Recommendations: An authentic leadership educational program is recommended to be recognized and implemented for all head nurses who in a management position in the nursing field in other hospitals as needed.