Abstract
The author discusses how nursing theoretical knowledge contributes to nursing leadership and how the use of nursing theory can build confidence in nurse leaders in all settings, drawing on examples from selected theorists’ work. It is suggested that when nursing theory is not fully valued by the profession, not only knowledge is lost but also the language that helps nurses to lead. However, the vision and the voice of nursing theory will allow nurses to lead with creativity and to tap into innovation that facilitates contributions to healthcare. To be firmly, intellectually, and enthusiastically grounded in one’s disciplinary knowledge sets the stage to being able to lead effectively. Four aspects of leadership are addressed: clinical, interdisciplinary, nursing education, and interpersonal nursing. Our accumulated nursing theories can help nurse leaders to meet contemporary healthcare challenges by providing answers that help to focus on improvement, patient-centered care, critical reflection, and caring.