Sigma Iota (ΣΙ), Established March 12, 1912 was the first Latin American based Greek Lettered inter-collegiate fraternity in the United States.
Sigma Iota was founded on November 27, 1904 in Louisiana State University as a secret society for Spanish-American students under the name La Colonia Hispano-Americana. Soon after its founding La Colonia Hispano-Americano decided to change its name to Sociedad Hispano-Americana in December 1904.
Between 1912 and 1925, Sigma Iota expanded very rapidly in the United States, South America, and Europe. As a result of this, Sigma Iota became the first international Latin American based fraternity. By 1928, Sigma Iota had lost many of its chapters and therefore sought to stabilize its operations by consolidating its chapters in the United States with a more stationary and well-rooted organization.
On December 26, 1931 Sigma Iota Fraternity merged with Phi Lambda Alpha Fraternity to form Phi Iota Alpha. Phi Sigma Alpha Fraternity can also trace its roots back to ΦΛA.