- American Center for Physics
 - Brings together in one building, the American Institute of Physics, The American Physical Society, the American Association of Physics Teachers, and the American Association of Physicists in Medicine. - American Institute of Physics (AIP) (10)
- American Physical Society (4)
- Aspen Center for Physics
- Promotes organized research in physics, astrophysics, and related fields through a program of individual and collaborative research, seminars, workshops, and conferences.
- DLSU Philippines Physics Society
- Current updates and events, officers profile and more.
- Egyptian Society of Crystallography and Applications (ECSA)
- Follows scientific progress in crystallography and related activities.
- Egyptian Society of Solid Science and Applications
- Organization for those interested in solid state science in Egypt.
- GIREP-ICPE International Conference 1996
- International body of physics professors and teachers who want to cooperate in their work on physics teaching.
- Hypatia Institute, The
- Promoting gender equity in physics; featuring news, links, resources for women students, and a virtual maze to discover the "herstory" of science.
- International Association for the Properties of Water and Steam (IAPWS)
- International organization concerned with the thermophysical properties of water and steam, particularly those properties of high-temperature steam, water, and aqueous systems that are relevant to thermal power cycles and other industrial applications.
- International Union for Vacuum Science, Technique, and Applications (IUVSTA) (2)
- National Academy of Sciences Board on Physics and Astronomy
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