About Us

Over 110 Years of Brotherhood

Established in 1902, Theta Chi Beta Chapter is the oldest active Theta Chi chapter in the country, and is one of the first fraternities founded at MIT. We have a storied history of developing leaders: our alumni go on to start companies, build self-driving cars, cure diseases, get involved in politics, serve in the military, and change the world. The brothers of Theta Chi are dedicated to helping each other achieve their goals and give back to the community.

Theta Chi is committed to fostering a fun, engaging environment built on a foundation of scholarship, love, and respect. We develop lifelong friendships that grow beyond the four short years we spend together at MIT.

Our Organization

What we're all about


Academics are a priority at Theta Chi. Members of the house excel in a wide variety of academic pursuits and are always willing to help one another on a problem set or difficult concept.

Community Service

At Theta Chi we believe we have a responsibility to the people around us. We work with charities and local organizations to give back to our community, holding semesterly community service events that are both enjoyable and impactful.


We are dedicated to fostering a healthy and safe environment. Each semester we participate in several intramural sports and hold a variety of outings to keep brothers out and active.

Alumni Network

Being a part of Theta Chi means being a part of our rich history and tradition. With over eleven hundred alumni, our organization gives members a chance to meet and connect with alumni from all parts of the world across a variety of professions.

Where We Live

528 Beacon Street

We are very proud of our historic five-story brownstown home located just across the Charles River from MIT in Boston's Back Bay.


At Theta Chi, we know that our studies come first. Our house is complete with a library and group study area where brothers can work together on problem sets and projects.


In between classes, on weekends, or after class hours, we like to take a break from working and make use of our lounge, bar, pool and ping pong tables, and movie room.


We pride ourselves on our vibrant social life. Interacting with the community and each other is a core part of life at Theta Chi. Each semester we host a variety of events, from parties and hangouts to community service fundraisers and formals.