More than a sorority.

Tri Sigma is a transformative and inclusive space where women build lifelong friendships, learn to navigate and excel in today’s ever-changing landscape, and inspire meaningful change in the world.

Empowering Women Since 1898

Tri Sigma was founded on the guiding values of wisdom, power, faith, hope, and love.

Why Tri Sigma?

Joining Tri Sigma means becoming a part of a worldwide sisterhood of women who support, inspire, and motivate each other to reach their full potential. 

Collegiate members celebrating bid day.
Two collegiate members celebrating bid day.

Lifelong Connnections

Whether you are a recent graduate, new to your local community, or looking to reconnect with chapter sisters, there are engagement opportunities for Sigmas at any stage of life.  

Let Founders Day of Giving begin 💜🎉 

Are you ready to help pave the way for future generations of world-changing women? Visit the link in our bio to make a gift or check our progress on the Founders Day of Giving dashboard!
Founders Day of Giving is THIS WEEK! 💜 🎉

On April 19-20, Sigmas across the country will come together to provide enduring support for the leadership development, scholarship, and philanthropic initiatives of Tri Sigma.

But it's not too early to get started! Make a gift today at
Founders Day of Giving is only two weeks away! 💜🎉

Join us for 1 day, 8 hours, and 98-minutes starting April 19 to honor our Founders and help us raise $200,000 to empower the future of Tri Sigma!

Check periodically for more updates and learn how you can get involved.

Engage With Us

Though alumnae life looks a bit different than the collegiate experience, your membership in Tri Sigma spans a lifetime. It’s never too late to catch up. We’ll be right here.

Shop Tri Sigma

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Purple & Pearls

Shop Purple & Pearls, the official boutique of Tri Sigma, for all your apparel needs—including custom chapter orders.

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Herff Jones

Herff Jones is the official jeweler of Tri Sigma offering milestone pieces, graduation stoles, and everyday jewelry.

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Find Greek

Looking for more? Check out FindGreek for more Tri Sigma apparel and gift ideas from officially licensed vendors.


Applications to serve on the Nominating Committee for the 2025-28 Executive Council elections are now open! Learn more or apply by July 31, 2024 »