Patty Smith Hill (27 March 1868 — 25 May 1946) was an American nursery school, kindergarten teacher, and key founder of the National Association Nursery Education (NANE) which now exists as the National Association For the Education of Young Children (NAEYC).

Patty Hill was born in Anchorage, Kentucky.

Hill was an authority and leader in the progressive education movement of the late 19th and early 20th centuries. Patty developed the Patty Hill blocks and in 1924 helped create the Institute of Child Welfare Research at Columbia University Teachers College. The Patty Hill blocks were large blocks with which children could create giant constructions.