|Founded||March 4, 1827|
|Headquarters||P.O. Box 57417|
Tucson, AZ 85732-7417
The Sigma Phi Society (ΣΦ) was founded in 1827 at Union College. It was the second Greek fraternal organization founded in the United States and the first to establish a chapter at another college, making it the first national Greek organization. Sigma Phi is a member of the North American Interfraternity Conference.
The Sigma Phi Society (ΣΦ) was founded on March 4, 1827, on the campus of Union College as a part of the Union Triad in Schenectady, New York. Its founders were Samuel W. Beall, Thomas Fielder Bowie, Rev. R. H. Chapman, Hon. Charles T. Cromwell, George N, Porter, and Hon. Charles N. Rowley.
The Alpha chapter of Sigma Phi at Union College has been in continuous operation since its founding, making it the oldest continuously running fraternity chapter in the United States.
In 1831, Beta of New York was established at Hamilton College, making the society the first Greek fraternal organization in the United States to establish a chapter at another college. Thus, Sigma Phi Society is the first National Greek Organization in the United States.
The practices and rituals of the Sigma Phi Society are relatively unknown due to its establishment, and continued consideration, as a secret society.
Sigma Phi is a member of the North American Interfraternity Conference.
The Sigma Phi badge is a monogram with a jeweled Σ directly over a Φ that is either plain or chased. It was designed by Charles N. Rowley, founder of the Beta of New York chapter. In 1879, Baird's stated that the badge was royal purple.
Chapters of Sigma Phi, with active chapters indicated in bold and inactive chapters indicated in italic:
|Alpha of New York (U)||March 4, 1827||Union College||Schenectady, New York||Active|
|Beta of New York (H)||1831–2019||Hamilton College||Clinton, New York||Inactive||[a]|
|Alpha of Massachusetts (W)||1834–1968||Williams College||Williamstown, Massachusetts||Inactive|
|Gamma of New York (N)||March 4, 1836–March 4, 1848||New York University||New York City, New York||Inactive|||
|Delta of New York (G)||August 4, 1840–xxxx ?||Hobart College||Geneva, New York||Inactive||[b]|
|Alpha of Vermont (V)||March 4, 1845||University of Vermont||Burlington, Vermont||Active|
|Alpha of New Jersey (P)||1853–1858||Princeton University||Princeton, New Jersey||Inactive||[c]|
|Alpha of Michigan (M)||1858–2022||University of Michigan||Ann Arbor, Michigan||Inactive||[d][a]|
|Alpha of Pennsylvania (L)||February 4, 1887–2002||Lehigh University||Bethlehem, Pennsylvania||Inactive|
|Epsilon of New York (C)||October 4, 1890||Cornell University||Ithaca, New York||Active|
|Alpha of Wisconsin (F)||October 31, 1908||University of Wisconsin–Madison||Madison, Wisconsin||Active|
|Alpha of California (I)||September 7, 1912||University of California, Berkeley||Berkley, California||Active||[a][e]|
|Alpha of Virginia (S)||1953||University of Virginia||Charlottesville, Virginia||Active|
|Alpha of North Carolina (T)||2008–2019||University of North Carolina at Chapel Hill||Chapel Hill, North Carolina||Inactive|
Some chapters own buildings on the National Register of Historic Places, such as the Thorsen House, owned by the Alpha of California chapter in Berkeley and designed by Greene and Greene. The Alpha of Wisconsin chapter house is the Harold C. Bradley House, a National Historic Landmark designed in 1908 by Louis Sullivan.
The Alpha of Vermont chapter house, known as Sigma Phi Place, is a list contributing building to the National Registry of Historic Places' University Green Historic District. It was designed in 1903 by architect Marcus T. Reynolds of Albany, New York, who was a member of the Alpha of Massachusetts chapter. Located at 420 College Street, Sigma Pi Place was the first purpose-built fraternity house at the University of Vermont. It is a three-story, Colonial Revival style brick house. Its main entrance has a gable pedimented portico with four columns that have Corinthian capitals.
Main article: List of Sigma Phi members