Lavinia Mary Fitzalan-Howard, Duchess of Norfolk LG CBE (née Strutt; 22 March 1916 – 10 December 1995) was a British noblewoman.

Born Lavinia Mary Strutt, she was the only daughter of Algernon Strutt, 3rd Baron Belper, and his wife, Eva. She was educated at Abbot's Hill School. On 27 January 1937, she married Bernard Fitzalan-Howard, 16th Duke of Norfolk at the Brompton Oratory.^[1] She did not convert to Roman Catholicism, her husband's religion. They had four daughters, only one (the youngest) of whom has children:

• Lady Anne Fitzalan-Howard, later 14th Lady Herries of Terregles (1938–2014); married Colin Cowdrey, Baron Cowdrey of Tonbridge
• Lady Mary Fitzalan-Howard, later 15th Lady Herries of Terregles (1940–2017); married Anthony Mumford
• Lady Sarah Fitzalan-Howard (1941–2015); married Nigel Clutton
• Lady Jane Fitzalan-Howard, later 16th Lady Herries of Terregles (b. 1945); married Michael Kerr, 13th Marquess of Lothian

At the coronation of King George VI and Queen Elizabeth in 1937, the Duchess of Norfolk was one of four duchesses who held the canopy above Queen Elizabeth during the latter's anointing. In 1953, she took the part of Queen Elizabeth II during dress rehearsals for the coronation at Westminster Abbey. The Duke of Norfolk was hereditary Earl Marshal, and organised both coronations as well as important state events in later years.