The American Institute of Physics (AIP) is a not-for-profit membership corporation which began in 1931 for the purpose of promoting the advancement and diffusion of the knowledge of physics and its application to human welfare. Its members are leading societies in the fields of physics and astronomy, and its activities include providing services to its member societies in publishing, finance, and education.

A magazine for the physics community published since 1948 by the American Institute of Physics, Physics Today brings to physicists articles on current issues and physics education, reports on meetings, book reviews, and news of research programs and professional activities.