Alfred William Maitland FitzRoy, 8th Duke of Grafton (3 March 1850 – 10 January 1930), styled Lord Alfred FitzRoy between 1882 and 1912 and Earl of Euston between 1912 and 1918, was the second son of Augustus FitzRoy, 7th Duke of Grafton and his wife Anna Balfour, daughter of James Balfour (-1845) and aunt of Arthur Balfour. His elder brother and heir to the dukedom Henry James FitzRoy, Earl of Euston died in 1912, before their father's death.
He married, firstly, Margaret Rose Smith (1855–1913), on 27 April 1875 and had three children:
The 8th Duke married, secondly, Susanna Mary McTaggart-Stewart (1878–1961), on 8 January 1916 and had two daughters:
The Duke died in 1930 and was succeeded by his grandson, John, Earl of Euston.