Institute of Physics
The Institute of Physics is a leading learned society and professional body, established since 1874. It undertakes a wide range of activities on behalf of physics and physicists. Institute of Physics Publishing publish over 30 journals plus a range of books, reference works, magazines, newsletters and electronic products.
European Physical Society
The European Physical Society serves the dual purpose of providing a forum for individual physicists, and acting as a federation of national societies.
American Institute of Physics
The American Institute of Physics (AIP) is a not-for-profit membership corporation chartered in 1931 for the purpose of promoting the advancement and diffusion of the knowledge of physics and its application to human welfare.
American Physical Society
The American Physical Society (APS) is an organization of more than 43,000 physicists worldwide. Since its formation in 1899, it has been dedicated to the advancement and diffusion of the knowledge of physics.
Many more are listed at Resources of Scholarly Societies - Physics