Eta Gamma Delta (ΗΓΔ) is a Puerto Rican sorority established in 1928.

In March 1928 a group of young ladies enrolled in the University of Puerto Rico at Rio Piedras founded Eta Gamma Delta Sorority. Its first president was Margarita Ortiz Toro.^[1] During the presidency of Beatriz del Toro in 1929, the sorority was recognized by university authorities. By 1932, an alumnus chapter called "Capitulo Pasivo" was organized in San Juan during the presidency of Conchita Santana Campos.

In 1940, on the (Colegio de Agricultura y Artes Mecanicas) now the University of Puerto Rico at Mayagüez Gilda Cernuda, Socorro Gaztambide, Aida Gauthier, Iris Ramírez, Catín Rllán, Doris Pérez, and others founded Delta Phi Omega sorority, it was the first sorority at the campus. On April 14, 1941, the then-president of the Alpha chapter of Eta Gamma Delta, Annie Bonar, invited this new group to join Eta Gamma Delta as its Beta chapter. After several meetings and visits by the Eta sisters, all the Delta Phi Omega sisters took the formal initiation and became part of the Eta Gamma Delta.

In 1943 the Alumni chapter at Mayagüez was established, calling itself the Zona Beta, their first president was Virginia Ramírez. It was then that the need for a central governing body became apparent. In 1944, the first Directiva General or central office was established with Eleonor Lawton as its first president.

In March 1946, the ladies of Delta Omega Mu local sorority met with Eta Gamma Delta member Sarah Torres Peralta. The purpose of their visit was to discuss with her the idea of Eta Gamma Delta establishing its Gamma chapter in the Interamerican University at San Germán where Delta Omega Mu was located. After several meetings and discussions, the ladies of Delta Omega Mu and others of the Beta chapter at Mayagüez who studied at the Interamerican became the Gamma chapter of Eta Gamma Delta. Their first chapter president was Rosarito Armstrong.^[1]

In 1949, the Delta chapter was founded by the Catholic University at Ponce. Its first chapter president was Rosarito Armstrong, the same sister who had been the first president of Gamma chapter.^[1] In 1955 an alumnus chapter - Zona - was founded at Ponce; its first president was Práxes Torres de García. In 1990 the Zeta chapter was established at the University of Sagrado Corazon.^[1] By February 1990 the Kappa Zona was established in Arecibo.^[1] In 1991 on an annual convention the Kappa chapter was re-instated. Most recently Zone Omega was established in 2007 in the state of Florida.

• Carmen Ana Culpeper
• Rosa Emilia Rodríguez
• Margarita Fernández Zavala.^[2]

• Concilio Interfraternitario Puertorriqueño de la Florida
• Puerto Rican fraternities and sororities