Caroline Louisa Cavendish-Bentinck (née Caroline Louisa Burnaby) (c. 1831 – 6 July 1918) was the maternal grandmother of Queen Elizabeth The Queen Mother, great-grandmother of Queen Elizabeth II, great-great-grandmother of Charles, Prince of Wales, and great-great-great-grandmother of Prince William, Duke of Cambridge and his brother Prince Harry of Wales, as well as being an ancestress of other members of the British Royal Family, descended from the Queen Mother.
She was born in about 1831, in Leicester, the daughter of Edwyn Burnaby of Baggrave Hall and his wife Anne Caroline Salisbury. She was baptised on 5 December 1832 at Hungarton, Leicestershire.
She married the Reverend Charles Cavendish-Bentinck, as his second wife, on 13 December 1859. Together they had three children:
- Cecilia Nina Cavendish-Bentinck (1862–1938); married Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne. They were parents to Queen Elizabeth The Queen Mother (1900–2002) and thus maternal grandparents of Queen Elizabeth II.
- Ann Violet Cavendish-Bentinck (1864–1932).
- Hyacinth Cavendish-Bentinck (1864–1916); married Augustus Edward Jessop.
After her first husband's death in 1865, she married Harry Warren Scott, the son of Sir William Scott of Ancrum, 6th Baronet, on 30 September 1870. He died on 23 August 1889 at Forbes House, Ham, Surrey. She died, twice widowed, on 6 July 1918 at Dawlish, Devon.