Welcome to Theta Chi Fraternity: Sigma Chapter. Have you ever wanted to be a part of an organization that matters and makes a difference, while developing your resume, and making some of the best friends you will ever have? Do you want to be part of a century old organization, one that grows and will continue to grow with your help? At Oregon State University, we pride ourselves in tradition, and as one of the oldest chapters of Theta Chi in the nation, 100 years old in fact, we uphold age-old traditions of fraternity life and brotherhood, while continuing to form and better the leaders of years to come. Here you will find information regarding our rich history as a brotherhood at OSU as well as information about our chapter’s strong presence on campus, how to join our brotherhood, and news of upcoming events.

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Interested in joining?

Are you a current or future student of OSU and wanting to get involved with Greek Life? We believe Theta Chi would be a great place to start your search. Head over to our Recruitment page for more information about who we are and what we do. We are always looking for quality men to join our brotherhood. Don't forget to fill out our Recruitment Interest Form to let us know more about you!

Want to suggest a member? 

Do you know somebody who you think would be a great addition to our fraternity? Fill out our Suggest A Member form to recommend a person to be a member of Theta Chi fraternity at OSU today!

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