Rachel Frances Alexander (13 May 1875 - 8 December 1964) was a social campaigner in Kensington, London. She was involved in the foundation of several charities in the borough including, the Kensington Housing Trust, the Kensington Council of Social Service and the North Kensington Community Centre. Her father William Cleverly Alexander was an early supporter of the painter James McNeill Whistler, who painted two of her elder sisters. Rachel herself was painted by the artist William Nicholson and she and her younger sister Jean donated seventeen paintings from their father's art collection to the National Gallery and pieces of his Japanese collection to the Victoria and Albert (now housed in the British Museum).