Sigma Delta Pi (fraternity)
| Sigma Delta Pi | |
|---|---|
| S.D.P. | |
| Founded | September 1858 Chandler Scientific School |
| Type | Social |
| Affiliation | Indepdendent |
| Status | Merged |
| Merge date | 1889 |
| Successor | Beta Theta Pi |
| Scope | National |
| Chapters | 3 |
| Patron | Vitruvius |
| Other name | Vitruvian |
| Headquarters | Hanover, New Hampshire United States |
Sigma Delta Pi (S.D.P.), also called Vitruvian, was an American college fraternity. It was established in 1858 at the Chandler Scientific School of Dartmouth College in Hanover, New Hampshire. It established three chapters before going inactive when the founding chapter joined Beta Theta Pi in 1889.