James Marmion Gilmor Carroll

James Marmion Gilmor Carroll (23 October 1884 – 1 September 1962) was a prominent Anglo-Irish Roman Catholic and a businessman.

Carroll was educated at St. Augustine's College, Ramsgate, Kent. He married Helena Hearn on 21 June 1916 and the couple had one daughter, Grace Carroll.

He became chairman of P. J. Carroll & Company Ltd (once Ireland’s oldest tobacco manufacturer and now a subsidiary of British American Tobacco plc) and of T. P. & R Goodbody (1929) Ltd., another Irish tobacco company, itself a subsidiary of Carroll's.