Aubrey Beauclerk, 6th Duke of St Albans (21 August 1765 – 12 August 1815) was an English aristocrat and politician.
Early life
thumb|left|The [[Aubrey Beauclerk, 5th Duke of St Albans|5th Duke of St Albans and his wife, Lady Catherine, son Aubrey and daughters Catherine and Caroline, by Franciszek Smuglevicz, 1778.]]
Beauclerk was born on 21 August 1765. He was the eldest son of Aubrey Beauclerk, 5th Duke of St Albans by his wife Lady Catherine Ponsonby. Among his sibling were Lord William Beauclerk, Lord Amelius Beauclerk (First and Principal Naval Aide-de-Camp to King William IV), Lady Catherine Beauclerk (who married Rev. James Burgess, Vicar of Hanworth), and Lady Caroline Beauclerk (who married Hon. Charles Lawrence Dundas, fourth son of Thomas Dundas, 1st Baron Dundas). who married George Coventry, 8th Earl of Coventry.
After his first wife's death on 18 August 1800, he married for the second time to Lady Louisa Grace Manners (1777–1816) on 15 August 1802 in London. Lady Louisa was the fifth daughter of John Manners, MP, and Louisa Tollemache, 7th Countess of Dysart. Together, they had one child: and the titles were inherited by the 6th Duke's younger brother William, who became the 8th Duke of St Albans, who had thirteen children.