Ambrose James Moriarty (9 August 1870 – 3 June 1949) was an English prelate of the Roman Catholic Church.

[2] He was ordained to the priesthood on 10 March 1894 and same year came to Shrewsbury to assist his uncle,[3] then a canon at the cathedral there, serving as curate until 1897.

He was until his death member of the Shrewsbury Free Library Committee and the council of the Shropshire Archaeological Society.

His consecration to the Episcopate took place on 28 January 1932, the principal consecrator was Thomas Leighton Williams, Archbishop of Birmingham, and the principal co-consecrators were John Patrick Barrett, Bishop of Plymouth and Hugh Singleton, Bishop of Shrewsbury.

[1] He was made assistant to the Pontifical Throne in 1944,[2] the year of his golden jubilee in priesthood, when he was presented with a cheque for £3,450 from the clergy and laity of his diocese, which he donated for the funding of training priests from the diocese at the English College.