The Princeton School of Public and International Affairs is a professional public policy school at Princeton University. The school provides an array of comprehensive coursework in the fields of international development, foreign policy, science and technology, and economics and finance through its undergraduate (AB) degrees, graduate Master of Public Affairs (MPA), Master of Public Policy (MPP), and PhD degrees.

A public policy school or school of public affairs is typically a university program, institution, or professional school of public policy, public administration, political science, international relations, security studies, management, urban planning, urban studies, intelligence studies, global studies, emergency management, public affairs, nonprofit management, criminology, and the sociology of law.