Mar Awa III is an Assyrian-American prelate who serves as the 122nd Catholicos-Patriarch of the Assyrian Church of the East. He previously served as the secretary of the Holy Synod, is one of five trustees of the Assyrian Church of the East Relief Organization (ACERO), and is president of both the Commission on Inter-Church Relations and Educational Development (CIRED) and of the National Executive Committee (NEC) of the Assyrian Church of the East Youth Association (ACEYA) of the United States of America.

The patriarch of the Church of the East is the patriarch, or leader and head bishop of the Church of the East. The position dates to the early centuries of Christianity within the Sassanid Empire, and the Church has been known by a variety of names, including the Church of the East, Nestorian Church, the Persian Church, the Sassanid Church, or East Syrian.