Westerhoff is a surname. Notable people with the surname include:Gay-Yee Westerhoff, Chinese-English cellist Hans Westerhoff, Dutch biologist and biochemist Jan Westerhoff, American philosopher and Orientalist Rembertus Westerhoff (1801-1874), Dutch politician, Thorbeckian Member of Parliament (1849-1873), general practitioner, scholar, first testator of the Groninger Museum