Theta Xi - Stevens Institute of Technology - Gamma Chapter
- Located in Hoboken, New Jersey.
- http://www.tx-gamma.org

Theta Xi - Purdue University - Theta Chapter
- Located in West Lafayette, IN.
- http://www.thetaxipurdue.org/

Theta Xi - Monmouth University - Gamma Xi Chapter
- West Long Branch, New Jersey.
- http://hawkmail.monmouth.edu/~thetaxi/

Theta Xi - Massachusetts Institute of Technology - Delta Chapter
- Founded April 29, 1885 at MIT in Cambridge, MA.
- http://theta-xi.mit.edu/

Theta Xi - Kansas State University - Alpha Iota Chapter
- Manhattan, KS.
- http://www.ksu.edu/thetaxi/

Theta Xi - Georgia Institute of Technology - Beta Alpha Chapter
- Established January 27, 1951 at Georgia Tech in Atlanta, G
- http://gttx.org/

Theta Xi - University of Delaware - Gamma Nu Chapter
- Located in Newark, DE.
- http://copland.udel.edu/stu-org/thetaxi/

Theta Xi - Ball State University - Kappa Kappa Chapter
- Located in Muncie, IN.
- http://www.thetaxifraternity.com