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Connect with nurses around the world

Official United Nations Partner Organization

Sigma is a global community of nurses from 100+ countries who, across borders and cultures, share the same commitment: bringing their best to nursing, wherever it leads them.

Official United Nations Partner Organization

Sigma is a global community of nurses from 100+ countries who, across borders and cultures, share the same commitment: bringing their best to nursing, wherever it leads them.

1M+ Inducted Members

100+Countries Represented

600+Chapters Worldwide

Discover or Get Involved

Wherever you practice, whatever your specialty, you’ll find peers ready to support your growth, broaden your perspective, and remind you what’s possible when nurses stand together.