Sir James Fortescue Flannery, 1st Baronet (16 December 1851 – 5 October 1943) was an English engineer and naval architect, and Liberal Unionist (later Conservative Party) politician. Flannery was born in Liverpool, the son of Capt. John Flannery of Seacombe. Educated at the and Victoria University, he worked in Birkenhead and was subsequently engaged by Sir Edward J Reid KCS later Chief Constructor of H.M Navy. He was head of Flannery, Baggally & Johnson Marine Engineering, which eventually opened offices in London, Liverpool and Rotterdam. and a Director of London and South Western Bank. Between 1900 and 1906 he was President of the Railway Clerks' Association. He was President of the Institute of Marine Engineers 1914, and later President of the Society of Consulting Engineers 1931.