(Image source: Ams.org)

- American Mathematical Society (AMS)Founded in 1888, this society promotes mathematical research and its uses, strengthen mathematical education, and foster awareness and appreciation of mathematics and its connections to other disciplines and to everyday life.
- Association for Women in Mathematics (AWM)Nonprofit organization dedicated to encouraging women and girls in the mathematical sciences.
- Mathematical Association of America (MAA)Nonprofit organization dedicated to encouraging women and girls in the mathematical sciences.
- National Council of Teachers of Mathematics (NCTM)Dedicated to improving the teaching and learning of mathematics nation-wide in the United States.

- Directorate for Mathematical & Physical Sciences (MPS)This directory includes info about the division, as well as links to related programs and resources. It is maintained by the US National Science Foundation (NSF).
- Division of Mathematical Sciences (DMS), National Science FoundationIncludes information about the division, as well as links to other programs and resources.
- Los Alamos National Laboratory: National Security ScienceLos Alamos National Laboratory is a premier national security research institution, delivering scientific and engineering solutions for the nation's most crucial and complex problems in safety, security, and reliability of the nation's nuclear deterrent.