Institute of Mathematics
- African Institute for Mathematical Sciences
- American Institute of Mathematics
- Australian Mathematical Sciences Institute
- Brunel Institute of Computational Mathematics
- CR Rao Advanced Institute of Mathematics, Statistics and Computer Science
- Center for Mathematical Modeling
- Central Economic Mathematical Institute
- Centre International de Rencontres Mathématiques
- Centre de Recerca Matemàtica
- Centre de Recherches Mathématiques
- Centro de Investigación en Matemáticas
- Chennai Mathematical Institute
- Clay Mathematics Institute
- CoMPLEX
- Courant Institute of Mathematical Sciences
- Einstein Institute of Mathematics
- Fachinformationszentrum Karlsruhe
- Fields Institute
- Hamilton Mathematics Institute
- Harish-Chandra Research Institute
- Hausdorff Center for Mathematics
- Indian Statistical Institute
- Institut Henri Poincaré
- Institut de Mathématiques de Toulouse
- Institut de mathématiques de Jussieu – Paris Rive Gauche
- Institut des Hautes Études Scientifiques
- Institute for Advanced Study
- Institute for Mathematics and its Applications
- Institute for Pure and Applied Mathematics
- Institute for Studies in Theoretical Physics and Mathematics
- Institute of Applied Physics and Computational Mathematics
- Institute of Mathematical Sciences, Chennai
- Institute of Mathematical Statistics
- Institute of Mathematics (National Academy of Sciences of Belarus)
- Institute of Mathematics and Applications (disambiguation)
- Institute of Mathematics and Applications, Bhubaneswar
- Institute of Mathematics and Informatics (Bulgarian Academy of Sciences)
- Institute of Mathematics and its Applications
- Institute of Mathematics of National Academy of Sciences of Armenia
- Institute of Mathematics of the National Academy of Sciences of Ukraine
- Institute of Mathematics of the Romanian Academy
- Institute of Mathematics, Physics, and Mechanics
- Institute of Statistical Mathematics
- Instituto Nacional de Matemática Pura e Aplicada
- International Centre for Mathematical Sciences
- Isaac Newton Institute
- János Bolyai Mathematical Institute
- Keldysh Institute of Applied Mathematics
- Korea Institute for Advanced Study
- Kyoto University
- Kyushu University
- Mathematical Sciences Research Institute
- Max Planck Institute for Mathematics
- Max Planck Institute for Mathematics in the Sciences
- Meiji University
- Mittag-Leffler Institute
- Moscow State Institute of Electronics and Mathematics
- National Institute for Mathematical Sciences
- Oberwolfach Research Institute for Mathematics
- Osaka Metropolitan University
- PPGMAp
- Pacific Institute for the Mathematical Sciences
- Research Institute for Mathematical Sciences
- Steklov Institute of Mathematics
- TIFR Centre for Applicable Mathematics
- The Institute of Mathematics and Computer Science, University of Latvia
- The Mathematical Institute, University of Oxford
- University of Copenhagen Institute for Mathematical Sciences
- University of Hyderabad