The advancement of nursing in Nigeria depends not only upon the competence of individual practitioners but also upon the capacity of nurses to act collectively through strong, responsible and representative professional organizations. Differences in educational background, specialty, grade, place of employment and personal interest can enrich nursing, but when such differences produce persistent fragmentation they weaken the profession's ability to influence health policy, protect standards, improve working conditions and advance patient care. This paper examines the importance of professional unity in Nigerian nursing and the responsibilities of nursing organizations in education, advocacy, ethics, leadership development, welfare, research and public communication. It argues that unity does not require the absence of disagreement; rather, it requires structures through which disagreement can be resolved without sacrificing the common interests of the profession. The paper calls for accountable leadership, active membership, stronger communication between national and local structures, collaboration among nursing groups and a clear distinction between professional advocacy and narrow sectional interest