The National Autonomous University of Mexico is today the most important Mexican public university and was founded in 1551, making it the second oldest in North America (after the Universidad Autуnoma de Santo Domingo (UASD)). It is the largest university in Latin America and was ranked the best in Latin America, and 95 in the world according to a study conducted by The Times and released in 2005. A study by Beijing University also considered UNAM to be the best university in the region and also the sole most important University in the Spanish-speaking world. It consists of faculties rather than departments. Both undergraduate and graduate studies are available. UNAM is also responsible for the Escuela Nacional Preparatoria (ENP) (National Preparatory School), and the Colegio de Ciencias y Humanidades (CCH), which consist of several high schools, spread around Mexico City. Counting ENP, CCH, undergraduate and graduate students, UNAM has over 269,000 students, making it one of the world's largest universities. It has several campuses in Mexico City, as well as many others in several locations across Mexico (mainly aimed at research and graduate studies), and four foreign campuses at San Antonio (Texas, USA), Chicago (Illinois, USA) and Hull (Quebec, Canada). In addition, it is the only university in Mexico with three Nobel Laureates among its former students: Alfonso Garcнa Robles (Peace), Octavio Paz (Literature), and Mario Molina (Chemistry). (There is arguably a fourth Nobel Prize awarded twice to a UNAM member: Ana Marнa Cetto was awarded the 1995 Nobel Peace Prize as a member of the Pugwash Conferences and the 2005 Nobel Peace Prize as a member of the IAEA).

• Facultad de Ciencias, Universidad Nacional Autónoma de México
• Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México
• Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México
• National Autonomous University of Mexico, Center for Atmospheric Sciences
• National Autonomous University of Mexico, Center of Mathematical Sciences
• National Autonomous University of Mexico, Center of Physical Sciences
• National Autonomous University of Mexico, Institute of Applied Mathematics and Systems
• National Autonomous University of Mexico, Institute of Mathematics

• Universidad Nacional Autónoma de México