Iyaaláwo or Iyalawo (Iyalao or Iyalaô in Latin America; literally meaning 'mother of divination' in the Yoruba language), also known as Iyanifa and Iyaonifa (meaning 'mother of Ifá') is a spiritual title that denotes a Priestess of Ifá. Its male counterpart is called Babalawo (meaning 'father of the divination'). Ifá is a divination system that represents the teachings of the Orisha Orunmila, the Orisha of Wisdom, who in turn serves as the oracular representative of Olodumare. The Iyalawo ascertain the future of their clients through communication with Ifá. This is done through the interpretation of either the patterns of the divining chain known as Opele, or the sacred palm nuts called Ikin, on the traditionally wooden divination tray called Opon Ifá.
The first woman initiated in the Ifá was Orunmila's daughter as described in the Ifa verse Eji Ogbe. A verse in Iwori Meji mentions that her name was Alara and that she underwent an apprenticeship from Orunmila. When he had a son, she was responsible for a large part of her younger brother's training. The sacred odu Oturupon Irete sites a woman named Oluwo being initiated into Ifa after giving birth to a son by Oduduwa. That son became known as the Ooni. The Ifa Odu Odi Ogbe speaks of a woman divining and performing ritual sacrifice for Orunmila by the name Eruko-ya-l'egan o d'Oosa also known as Orisa Oke. Another documented African Iyalawo was Agbaye Arabinrin Oluwa, who lived c. 200 AD in Nigeria. The first documented American Iyalawo was Dr. D'Haifa Odufora Ifatogun, who was initiated in 1985. The first Lucumi Iyaonifas initiatied were María Cuesta Conde and Nidia Aguila de León in 2000.
Iyalawos undergo training in the memorization and interpretation of the 256 Odu or mysteries, as well as in the numerous verses or Ese of Ifá. Traditionally, the Iyalawo usually have additional professional specialties. For instance, several would also be herbalists, while others would specialize in extinguishing the troubles caused by Ajogun. The Iyalawos are, however, generally trained in the determination of problems, or to divine how good fortune can be maintained, and the application of both spiritual and related secular diagnosis and solutions. Their primary function is to assist people in finding, understanding, and being in alignment with one's individual destiny, Ori of life until they experience spiritual wisdom as a part of their daily experience. The Awo is charged with helping people develop the discipline and character that supports such spiritual growth called "Iwa Pele", or good character. This is done by identifying the client's spiritual destiny, or Ori, and developing a spiritual blueprint which can be used to support, cultivate, and live out that destiny.