Sigma Theta Tau International Honor Society of Nursing (Sigma)

The Sigma Theta Tau International Honor Society of Nursing (Sigma) is a nonprofit organization with the mission of developing nurse leaders anywhere to improve healthcare everywhere. Founded in 1922, Sigma has more than 135,000 active members from more than 100 countries based at institutions of higher education and health systems from Armenia, Australia, and Botswana to Thailand, the United States, and Wales.

Sigma members include clinical nurses and administrators, academic nurse educators and researchers, policymakers, entrepreneurs, and others working to fulfill the organization’s vision of connected, empowered nurse leaders transforming global healthcare.