Located in the northern region of Thailand, Maejo University is the oldest agricultural institution in the country. It was founded in June 7, 1934 as the Northern Agricultural Teachers Training School under the Ministry of Education and was later transferred under the Ministry of Agriculture to become the Kasetsart Preparatory School.  After a year, it developed  into the Maejo Agricultural School to serve as a research station of Kasetsart University (KU), a state university in Bangkok.  It began to accept M.6 (Grade 12) students who, upon finishing at Maejo, were automatically admitted to KU for a 4-year degree program.
            In 1956, Maejo was renamed Chiang Mai College of Agriculture, making it the first certificate-granting agricultural college under the Ministry of Education. Its graduates became secondary school teachers.
            In February 19, 1975, Maejo was royally confirmed as one of the state universities under the Ministry of University Affairs and was called the Institute of Agricultural Technology. With this status, it began to accept students from vocational schools to register into 2-year programs (associate degree) and, students from the secondary schools to its 4-year degree programs.  This move was aimed to give all vocational school graduates greater opportunity to attain higher study in practical agriculture.  It is for this reason that February the 19th is celebrated as Maejo's Foundation Day. 
            In 1980, the institute’s name was once again changed into Maejo Institute of Agricultural Technology upon the request of its alumni.  By November 12, 1996, Maejo University was officially given approval by the national parliament as a full-fledged university, both in title and in essence.
            Under the Ministry of Education, Maejo University is a degree-granting institute that attempts to educate students in practical agriculture,  aiming to prepare them for agricultural pursuits.  MJU strives to nurture and develop its graduates to become technically competent  besides being culturally and scholarly matured thereby, able to contribute to the future of the country.