The Antillean Adventist University (AAU) (in Spanish: Universidad Adventista de las Antillas) (UAA) is a private, Seventh-day Adventist university in Mayagüez, Puerto Rico. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system.The university developed from the merging of two educational institutions: Puerto Rico Academy established in 1946; renamed in 1957 as the Colegio Adventista Puertorriqueño, and Antillian College which moved to Puerto Rico as a result of the Cuban Revolution. In 1989, the school's higher education program was accredited by the Council of Higher Education of Puerto Rico on August 18, 1989.