The Seven NSF Math Institutes
The seven NSF Mathematics Institutes are:

AIM (American Institute of Mathematics)
Palo Alto, California
 IAS (Institute for Advanced Study)
Princeton, New Jersey
 IMA (Institute for Mathematics and its Applications)
Minneapolis, Minnesota
 IPAM (Institute for Pure and Applied Mathematics)
Los Angeles, California
 MBI (Mathematical Biosciences Institute)
Columbus, Ohio
 MSRI (Mathematical Sciences Research Institute)
Berkeley, California
 SAMSI (Statistical and Applied Mathematical Sciences Institute)
Research Triangle Park, North Carolina
There is a Joint Math Institutes Website(link opens new window)
with detailed information about all the Institutes.