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Sigma Theta Tau

Founded in 1922 by six nursing students, Sigma Theta Tau International Honor Society of Nursing (Sigma) has more than 100,000 active members and 600 chapters at institutions of higher education and healthcare partners 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.

Mu Gamma Chapter-at-Large

Sigma Mu Gamma at-Large Chapter Logo

Founded in 1990 at Boise State University and joined by Northwest Nazarene University in 2017, Mu Gamma Chapter-at-Large is the 289th chapter of Sigma. Invitations are sent to students who meet Sigma’s academic requirements (vary by undergraduate and graduate programs) after completion of semesters in their nursing degree program. For more information and contacts please see the Sigma and/or Mu Gamma chapter websites.

Who Can Join?

Nursing professionals who were not previously inducted as nursing students can also join STTI as Nurse Leaders.

Membership is based on established criteria and is by invitation only.  Interested students may contact Sarah Llewellyn at for more information.