One means of recognizing outstanding students at Colorado State University is through election to membership in a chapter of a local, national, or international honorary society. Criteria for membership and the scope of activities vary widely. Some societies focus primarily on scholastic achievement; others consider grades along with other factors such as community service and leadership. Some select members by invitation only; for others, students must submit applications.

Below are listed the names of those societies who are present at Colorado State University, with the name of some local contacts, and where possible, the web site of the organization.

All University

Alpha Lambda Delta – Freshmen

Gamma Beta Phi

Golden Key

Mortar Board

National Society of Collegiate Scholars

National Society of Leadership and Success

Order of Omega

Phi Beta Kappa

Phi Kappa Phi

Pinnacle International – Non-Traditional Students

Sigma Alpha Lambda – National Leadership and Honors Organization

Sigma Xi – Scientific Research

Society of Collegiate Leadership & Achievement (SCLA)

Tau Sigma

Agricultural Sciences

Alpha Zeta

Gamma Sigma Delta – Agricultural and Related Sciences

Pi Alpha Xi – Horticulture


Alpha Sigma Gamma – Real Estate

Beta Alpha Psi – Accounting

Beta Gamma Sigma


Alpha Epsilon – Agricultural Engineering

Chi Epsilon – Civil Engineering

Eta Kappa Nu – Electrical and Computer Engineering

Omega Chi Epsilon – Chemical Engineering

Pi Tau Sigma – Mechanical Engineering

Tau Beta Pi – Engineering

Health and Human Sciences

Phi Alpha – Social Work

Pi Theta Epsilon – Occupational Therapy

Sigma Lambda Chi – Construction Management

Liberal Arts

Alpha Kappa Delta – Sociology

Kappa Tau Alpha – Technical Journalism

Lambda Pi Eta – Communication Studies

Omicron Delta Epsilon – Economics

Phi Alpha Theta – History

Pi Sigma Alpha – Political Science

Sigma Tau Delta – English

Natural Resources

Xi Sigma Pi

Natural Sciences

Beta Beta Beta – Biology

Psi Chi – Psychology

Sigma Pi Sigma – Physics

Upsilon Pi Epsilon – Computer Science

Veterinary Medicine and Biomedical Sciences

Phi Zeta – Veterinary Medicine