Margaret G. Arnstein (1904–1972) was a prominent American public health expert, educator, and author who dedicated her career to advancing nursing practices and public health administration. Over several decades, she worked extensively within the United States public health sector and held positions at various American academic institutions, culminating in her appointment as the dean of the Yale School of Nursing in 1967. Throughout her career, Arnstein was an active contributor to the literature of her field, publishing numerous academic papers that analyzed and discussed nursing practices within the contemporary American healthcare system. Beyond her academic and administrative roles, she engaged with federal policy, participating in Congressional discussions regarding state provisions for the health sector, notably concerning the Second Supplemental Appropriation Bill of 1957. Affectionately known as 'Peg' by her peers in her later career, Arnstein remains a key figure in the mid-20th-century development of professional nursing education.
