Red Branch may refer to:
Red Branch (from the Old Irish Cróeb Ruad, or, Cróeb Derg ) - the name of two royal houses of Ulster Red Branch Cycle (or Ulster Cycle) legends and sagas of heroes of Ulster Red Branch, Texas, an unincorporated community in Trinity County, Texas Red Branch (novel), (1989), novelisation of the life of the Irish hero Cú Chulainn by the Irish-American author Morgan Llywelyn
See also Red Hand of Ulster Red-giant branch