The University of Rio Grande has four active Greek organizations that focus on community service, friendship, and leadership. All Greek organizations are governed by the All-Greek Council. All Greek Council is the governing body of social Greek organizations at Rio Grande. AGC sponsors and encourages activities and functions that promote the intellectual, cultural, and social development of individual fraternity and sorority members as expressed in the goals of the University of Rio Grande, which leads to the strengthening and improvement of the member organizations.

Alpha Chi Nu (Archon)
Description: The purpose of the Fraternal Order of Archon shall be to foster and maintain a fraternal spirit among its members, to encourage scholastic achievement, and to inculcate those principles of truth, justice, chivalry and culture that contribute to the development of upstanding character. Membership is invitation-only and is open to all male students of the University of Rio Grande. 
Advisor: David Brodeur dbrodeur@rio.edu  
President: Holden Fritz hfritz01@rio.edu  

Alpha Mu Beta
Description: The objectives of the Alpha Mu Beta sorority shall be to create a meaningful and long-lasting union among its members, stimulate all forms of scholastic achievement and cultivate an appreciation of the higher social and moral values in life. Membership is invitation-only and open to all female members of the University of Rio Grande. 
Advisor: Billina C. Donaldson billinad@rio.edu
President: Morgan Nutter mnutter01@rio.edu

Chi Omega Alpha
Description: Chi Omega Alpha is the oldest existing sorority at the University of Rio Grande. The foundations of this sorority are built on sisterhood, leadership, and lifelong friendship. In their eyes no girl is an island, and sisterhood is forever. The members are dedicated and hard-working women who focus on community service projects throughout campus and the community. With a philanthropy in Breast Cancer, it is the goal of Chi Omega Alpha to raise money and awareness for breast cancer research each year. You can see many of the Chi-O projects on their Instagram @chioatrio. Membership is invitation only and open to all female members of the University of Rio Grande. Members of the Sorority and or students whose mothers or grandmothers were members are eligible and encouraged to apply for the Chi Omega Alpha Chapter of Athena Scholarship.  Love in Athena.
Advisor: Melissa Roush melissar@rio.edu
President: Anna Ackley aackley01@rio.edu

Delta Theta
Description: The purpose of the Delta Theta sorority is to develop and maintain sisterhood among the women of the University of Rio Grande, to promote scholarship and to serve the campus and community of the University of Rio Grande. Membership is invitation-only and open to female students of the University of Rio Grande. 
Advisor: Marinda Cook mcook@rio.edu
President: Victoria Wilson vwilson01@rio.edu