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Triangle is the only men's STEM fraternity experience, open to engineers, architects and scientists. We provide a social experience with a focus on academic success and professional preparation.

Support Triangle Fraternity

Initially, I joined as a way to make new friends and find people with similar interests. As I became a part of the brotherhood, I found that I could work on more professional skills in terms of working different positions in the organization. All of the positions I have held have taught me things that I can use later in life.
Jeremy Westrich

University of Wisconsin at Milwaukee

Triangle taught me how to lead, through professional development and executive position opportunities. The work I’ve put into this organization has reciprocated tenfold by providing me with the network, tools, and skills I need to further my career. I am certain that joining has been the single greatest decision in my life.
Kurt Paul

Cal Poly - Pomona

Five years ago, I wanted nothing to do with joining a Fraternity.  Here I am now, 5 years later, in Triangle, serving as a founder and President of a new colony. Triangle has a place in my heart now, and it will characterize my time in college.
Tyler Blankenship

Rose-Hulman Institute of Technology

Being in Triangle I’m surrounded by guys who want to make the most of their college experience. They’re guys who help each other with classwork, guys I go to football games with, and guys I enjoy being around. Joining Triangle Fraternity was the best decision I could have ever made.
Nathan Nash

Colorado State University

Total Initiates

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Current Active Members

Active Colonies/Interest Groups

Living Alumni


Triangle Fraternity Welcomes New Staff For Release May 13, 2022:  Triangle Fraternity is excited to announce the hiring of Zack Pfeifer as the Assistant Director of Leadership Programs and Henry Calleo as the Director of Strategic Growth, both started their roles this...

May 2022 HQ NewsContent covered in this edition, include:  National Council & TBHC Elections are live Register for National Convention by May 31 Triangle staff is looking for two convention interns Submit all outstanding invoices and finalize all roster changes by...

Triangle Education Foundation Announces New Assistant Director of Alumni Engagement & Stewardship and Director of DevelopmentFor ReleaseApril 7, 2022: The Triangle Education Foundation is excited to announce the hiring of Alexandra Williams as the Assistant...

Triangle HQ News – April 2022

 ONLINE FOUNDERS DAY EVENT Our online National Founders Day Event is THIS SATURDAY! National President John Cottage ps04 will share his Founders Day message, we'll provide a short "State of the Fraternity report, as well as the popular "Triangle Trivia" contest. You...

National Headquarters Address

120 S. Center Street
Plainfield, IN 46168
P | (317) 837-9640
F | (317) 837-9642

Office Hours

Monday through Friday
9 a.m. to 5 p.m. (Eastern)