Hester Adrienne Henriëtte baroness d'Aulnis de Bourouill (The Hague, 3 September 1920 - 29 December 1996) was a Dutch lawyer who dealt mainly with medical-ethical issues.
She was co-founder of the Dutch Foundation for Voluntary Euthanasia (NVVE) and was secretary until 1985, when the foundation was dissolved.
For her contributions, she was appointed Officer in the Order of Orange-Nassau.