*Below are the only recognized Fraternities and Sororities at Penn. While some groups of students claim they are a fraternity or sorority, these orgs are the only Greek-lettered social organizations at Penn with a national organization affiliation, recognition benefits, advisors, and insurance.
Interfraternity Council (IFC)
- Alpha Chi Rho Fraternity
- Alpha Epsilon Pi Fraternity
- Alpha Tau Omega Fraternity
- Beta Theta Pi Fraternity
- St. Elmo Club, Delta Phi Fraternity*
- St. Anthony Hall, the Fraternity of Delta Psi
- Kappa Alpha Society
- Kappa Sigma Fraternity
- Phi Delta Theta Fraternity
- Phi Gamma Delta, FIJI Fraternity
- Phi Kappa Psi Fraternity
- Pi Kappa Alpha Fraternity
- Pi Kappa Phi Fraternity
- Psi Upsilon Fraternity
- Sigma Alpha Epsilon Fraternity
- Sigma Alpha Mu Fraternity
- Sigma Chi Fraternity
- Sigma Nu Fraternity
- Sigma Phi Epsilon Fraternity
- Tau Epsilon Phi Fraternity
- Zeta Beta Tau Fraternity
- Zeta Psi Fraternity
*gender-inclusive organizations in IFC
Intercultural Greek Council (IGC)
- Alpha Kappa Alpha Sorority, Inc.
- alpha Kappa Delta Phi Sorority, Inc.
- Alpha Phi Alpha Fraternity, Inc.
- Delta Sigma Theta Sorority, Inc.
- Kappa Alpha Psi Fraternity, Inc.
- Lambda Theta Alpha Latin Sorority, Inc.
- Lambda Upsilon Lambda Fraternity, Inc. / La Unidad Latina Delta
- Omega Psi Phi Fraternity, Inc.
- Sigma Lambda Upsilon / Senoritas Latinas Unidas Sorority, Inc.
- Sigma Psi Zeta Sorority, Inc.
- Zeta Phi Beta Sorority, Inc.
Panhellenic Council (PHC)
- Alpha Phi Women's Fraternity
- Chi Omega Women's Fraternity
- Delta Delta Delta Women's Fraternity
- Kappa Alpha Theta Women's Fraternity
- Sigma Delta Tau Sorority
- Sigma Kappa Sorority
- Zeta Tau Alpha Women's Fraternity