Ferdinand Faithfull Begg FRSE (middle name sometimes spelt Faithful; 27 December 1847 in Edinburgh – 4 December 1926 in Hove, Sussex) was a Scottish stockbroker and Unionist politician. He served as Chairman of the Edinburgh Stock Exchange (1885–87) and Chairman of the London Chamber of Commerce (1912–15). He was Senior Partner of Faithfull Begg & Co Stockbrokers in London (1887–1913). He was Member of Parliament for Glasgow St Rollox from 17 July 1895, to 4 October 1900.