Triangle Fraternity

Triangle Fraternity is both a social and a professional fraternity, limiting its membership to students majoring in engineering, architecture, and the sciences. It is the only member of the North-American Interfraternity Conference to limit its membership to these majors.

Triangle Fraternity began to organize at the University of Illinois in the fall of 1906 and was incorporated by the state of Illinois on April 15, 1907, which is celebrated each year as Founders' Day.

There are currently 28 chapters of Triangle Fraternity in the U.S., mostly in the Midwest. The headquarters is currently located in Plainfield, Indiana.

Notable Triangle Alumni include Challenger astronaut Ellison Onizuka, James Geringer, former governor of the U.S. state of Wyoming, Jay Hammond, former governor of the U.S. state of Alaska, Steven L. Miller, former CEO of Shell Oil Company, Charles H. Bowman, former chairman and CEO of BP Americas, Stanton R. Cook, former chairman, president and CEO of the Tribune Company, Edward McCracken, former CEO of Silicon Graphics, and Fred R. Kappel, former chairman of the board of AT&T.