Berach (Lat. Veretus) was the name of several early Irish ecclesiastics.
(1.) The abbot of Bangor, County Down, who succeeded Segan, son of O'Conn, in 663, and died of the great plague in 664. He is commemorated April 21.
(2.) A better-known Berach was abbot of Cluaincairpthe, now Kilbarry. Feb. 15 is the day observed in his memory, but the dates of his Acts are uncertain. He was the son of Nemnald, of the race of Dobhtha, and was born at Gortnaluachra, near Cloon, Feb. 15, 521. He was successively under St. Daiglo and St. Kevin, and the place of his monastery was pointed out by a stag which carried his baggage. The date of his death is uncertain, but it probably occurred before the close of the 6th century. St. AEngus counts him among the bishop-saints of Ireland.