Aftimios Ofiesh, born Abdullah Ofiesh (October 22, 1880 – July 24, 1966), was an early 20th-century Eastern Orthodox bishop in the United States, serving as the immediate successor to St. Raphael of Brooklyn under the auspices of the Russian Orthodox Church. He held the title Bishop of Brooklyn from 1917 to April 1933, founded and led the American Orthodox Catholic Church for six years, and is, perhaps, best known as being the source of various lines of succession of episcopi vagantes.

Born in 1880 as the son of an Orthodox priest, and the sixth of ten children, Ofiesh was reared in Bikfaya, Lebanon. Assisting his father's religious work in his youth, his other relatives attempted to convince him to accept secular employment against desiring monasticism.

Ofiesh, a graduate and valedictorian of the Middle Eastern Orthodox Ecclesiastical Seminary in 1898 at the age of 18, assisted Bishop Gabriel Shatilla in Beirut where he was tonsured as a monk and ordained into the diaconate. In 1902, he was ordained as a priest by Metropolitan Arsenios Haddad. After being appointed an archdeacon, Ofiesh unsuccessfully advocated for reform within the Eastern Orthodox Church as he did in seminary. Facing previous threats of excommunication, a few years later, Aftimios lobbied for modernistic reform and Arab unity and was met with further resistance from Patriarch Meletius II of Antioch who threatened excommunication again.

Arriving in New York State in 1905 with the support of Metropolitan Arsenios, Aftimios was submitted to the leadership of St. Raphael of Brooklyn. Following the untimely death of St. Raphael of Brooklyn in 1915, then Archimandrite Aftimios Ofiesh was elected to serve as his replacement in caring for the Arab Orthodox faithful in North America under the Russian Orthodox Church's canonical authority. He was consecrated by Archbishop Evdokim Meschersky as an auxiliary bishop in 1917 with the title of Bishop of Brooklyn.

In 1922, he was placed in charge of a group of clergy which became known as the "English-speaking Department"—an organization presenting Orthodox Christianity to English-speaking Americans; this followed a previous task in 1905 from the Russian Orthodox.

In 1923, in recognition for his work in the United States, he was elevated by Metropolitan Platon (Rozhdestvensky) of New York to the rank of archbishop. His elevation to the rank of archbishop was disputed and deemed illicit.

In 1924, in the canonical disputes of American Orthodoxy following the onset of the Bolshevik Revolution in Russia, the Arab Orthodox faithful split into two factions: one that wished to go under the canonical authority of the Greek Orthodox Church of Antioch, and another that wished to stay faithful to the Russian Orthodox Church. The former group was organized by Bishop Victor (Abu Assaly) of New York, thus beginning the official presence of the Greek Orthodox Church of Antioch on American soil—today, the Antiochian Orthodox Christian Archdiocese of North America. Under Platon's authority, the Russian Orthodox in America—including Ofiesh—were "under questionable canonical jurisdiction" due to the situation following the Bolshevik Revolution in Russia.

By 1927, Aftimios was commissioned by the Russian diocese in America to form an English-speaking jurisdiction: the American Orthodox Catholic Church.