​Trinity College and the Inter-Greek Council recognizes fourteen Greek letter organizations. In addition to NPC, NIC, and NALFO organizations, several co-ed societies and local groups offer an opportunity for students to find their best fit within the Greek system.

Co-ed Societies
Cleo Society of AX
St. Anthony Hall 

Local Sororities
IVY Society
The Stella Society
Zeta Omega Eta

National Association of Latino Fraternal Organizations
Lambda Alpha Upsilon

National Interfraternal Conference​
Alpha Chi Rho
Alpha Delta Phi
Alpha Epsilon Pi
Kappa Sigma
Pi Kappa Alpha
Psi Upsilon

National Panhellenic Conference
Alpha Chi Omega
Kappa Kappa Gamma​​​