Sigma Delta Pi (fraternity)

Sigma Delta Pi
S.D.P.
FoundedSeptember 1858 (September 1858)
Chandler Scientific School
TypeSocial
AffiliationIndepdendent
StatusMerged
Merge date1889
SuccessorBeta Theta Pi
ScopeNational
Chapters3
PatronVitruvius
Other nameVitruvian
HeadquartersHanover, 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.