From RIT's website:

Fraternities
Alpha Epsilon Pi
Alpha Phi Alpha
Delta Sigma Phi
Kappa Delta Rho
Kappa Phi Theta
Lambda Alpha Upsilon Fraternity, Inc.
Phi Beta Sigma Fraternity, Inc.
Phi Delta Theta
Phi Iota Alpha
Phi Kappa Psi
Phi Kappa Tau
Phi Sigma Kappa
Sigma Alpha Mu
Sigma Nu
Tau Kappa Epsilon
Triangle Fraternity

Sororities:
Alpha Kappa Alpha Sorority, Inc.
Alpha Sigma Alpha
Alpha Sigma Theta
Alpha Xi Delta
Delta Phi Epsilon
Lambda Pi Chi
Sigma Sigma Sigma
Zeta Tau Alpha