| Gamma Theta Upsilon | |
|---|---|
| ΓΘΥ | |
 | |
| Founded | May 15, 1928 Illinois State University |
| Type | Honor |
| Affiliation | ACHS |
| Status | Active |
| Emphasis | Geography |
| Scope | International |
| Colors | Brown, Light blue, and Gold |
| Publication | The Geographical Bulletin |
| Chapters | 312 |
| Headquarters | c/o Dr. Burrell Montz, Geography, Planning, and Environment, Brewster A-238 East Carolina University Greenville, North Carolina 27858-4353 United States |
| Website | gammathetaupsilon |
Gamma Theta Upsilon (ΓΘΥ or GTU) is an international honor society in geography. It was established in 1928 as a professional fraternity at Illinois State University and became international in 1969. Gamma Theta Upsilon is a member of Association of College Honor Societies.