Sigma Nursing is a renowned brand that boasts a global community of over 100,000 nurse leaders from all corners of the world. Established in 1922 by six nursing students, Sigma Theta Tau International Honor Society of Nursing (Sigma) operates with more than 100,000 active members and 600 chapters across esteemed educational institutions and healthcare partners in various countries, such as Armenia, Australia, Botswana, Thailand, the United States, and Wales. Sigma's diverse membership includes clinical nurses, administrators, academic nurse educators, researchers, policymakers, entrepreneurs, and others who are committed to realizing the organization's vision of connected and empowered nurse leaders revolutionizing global healthcare.

Sigma also oversees multiple subsidiaries, including the Sigma Foundation for Nursing, which funds essential research grants, leadership education grants, and membership subsidies. Furthermore, Sigma Marketplace provides evidence-based knowledge solutions designed specifically for nurses. Lastly, the Sigma Building Corporation effectively manages and maintains Sigma's headquarters building and grounds.

With a focus on advancing knowledge, teaching, learning, and service, Sigma is an internationally recognized community dedicated to nurturing communities of practice, education, and research within the nursing profession