Dorothea Sarah Florence Alexandra, Lady Phillips (née Ortlepp; 14 June 1863 – 23 August 1940) was a South African art patroness and promoter of indigenous culture.
After his sentence, reprieve and exile, they left for London and established a home in Grosvenor Square while maintaining a country house at Tylney Hall in Hampshire.
She persuaded Sir Max Michaelis to donate his considerable collection of 17th century Dutch and Flemish paintings to the city of Cape Town.
She headed a movement to preserve and restore the Koopmans-De Wet House in Cape Town and was an enthusiastic collector of Africana furniture, both for her own home and public institutions.
She was of the opinion that Britain and Germany should unite against the self-determination movement amongst the Asians and Africans, which she referred to as "The Black and the Yellow Perils".