About Us

Theta Xi is a social fraternity focused on developing its brothers into fine young members of society. Founded on April 29, 1864, at Rensselaer Polytechnic Institute in Troy, New York, the Grand Lodge is now located in St. Louis, Missouri. The original founding of the Purdue chapter of the fraternity in 1905 opened the path to expansion westward, beyond the east coast.

We believe all men are capable of

more than they allow themselves.


The Purpose of Theta Xi

Directly taken from The Quest for Theta Xi Fraternity:

The Purpose of Theta Xi is to provide a college home environment for its active members in which fellowship and alumni guidance supports are augments college and community efforts to make individual members more mature and chapter groups more useful units of society. Through its alumni and undergraduate leadership Theta Xi endeavors to assist each member to develop:

ONE, ​intellectual curiosity that assures the highest scholarship rating consistent with his ability;

TWO, habits that lead to better mental and physical health;​

THREE, sincerity in his association with others and confidence in himself;

FOUR, responsibility to chapter, college, community, and country;

FIVE, leadership that comes from practicing the principles of democratic self-government;

SIX, interests and activities outside regular scholastic studies that employ spare time to advantage;

SEVEN, spiritual understanding that provides a reservoir of strength to draw upon when faced with conditions beyond comprehension.



As an active brother of Theta Xi at Purdue University, you will join a family that will help you achieve your personal, professional, and academic goals in all aspects of your life. Members of the Theta Chapter are proud leaders both in and outside of the fraternity and the school at large. Join us in continuing to improve ourselves and those around us!


Since our re-chartering in the fall of 2016, Theta Xi had one of the top GPAs in all but one semester, with 3 semesters holding the top GPA position. As a brother, you will develop time management and study skills, as well as have access to notes from classes previously taken by other brothers.


Being a smaller group on campus means more opportunities to hold an important leadership position while pursuing undergraduate studies. Our members have also been actively involved in groups on campus, such as Purdue Formula SAE and Lunabotics.