Rosalie Dreyer (3 September 1895 – 21 May 1987) was a Swiss-born naturalised British nurse and administrator. Immigrating to England at the age of eighteen, she trained as a nurse in London and worked her way through the ranks to become matron, principal matron and chief matron-in-charge of the Nursing Service of the London County Council. At this time, nursing was making a shift from a voluntary service to a profession and Dreyer was involved as a pioneer in the development of Britain's public-funded nursing service.