Tamil Nadu Agricultural University TNAU originated in 1868 as an Agricultural School in Madras and later moved to Coimbatore. Affiliated with Madras University in 1920, it took full responsibility for Agricultural Education and Research. The Agricultural College and Research Institute in Coimbatore was the sole institute for South India until 1946 and became a Post-graduate Centre in 1958. TNAU was officially established in 1971, with the Agricultural College and Research Institute in Madurai founded in 1965.
Colleges under Tamil Nadu Agricultural University (TNAU):
| S.No | Address of the college | Colleges reference |
| 1 | Agricultural College and Research Institute, Coimbatore-641003 Phone: 0422-5611210 Email: deanagri@tnau.ac.in | Horticultural College and Research Institute, Periyakulam, Theni Dist-625604 Phone: 04546-231726, 231319 E-mail: deanhortpkrn@tnau.ac.in |
| 2 | Agricultural College and Research Institute, Madurai- 625104 Phone: 0452-2422956, 2422252 E-mail: deanagrimdu@tnau.ac.in | AC&R1, Madurai |
| 3 | Agricultural College and Research Institute, killlikulam, Tuticorin Dist-628252 Phone: 04630-261190,04630-261611 E-mail: cteangrikkm@tnau.ac.in | Ac&RI, Killikulam |
| 4 | Arbil Dharmalirigam Agricultural, College and Research Institute, Navalur Kuttappattu, Tiruchirappalli-620027. Phone: 28690161,2693162 E-mail: deanagritry@tnau.acin | ADAC&RI, Navalur kuttappttu, Trichy |
| 5 | Agricultural College and Research Institute Vazhavachanur, Tiruvannamalai Dist-606753 Phone: 04188-245-855, 04188-299013, 9486257548 Email: deanagrithm@tnau.ac.in | AC&RI, Vazhavachuanur |
| 6 | Agricultural College and Research Institute STAMIN Campus, Kudumiyanmalai, Pudukkottai-622104 Phone: 04339-241444 Email: deanagripdk@tnau.ac.in | AC&RI, Kudumiyanmalai |
| 7 | Agricultural College and Research Institute, eachangkottai, Orathanad TK Thanjavur Dist- 614902 Phone: 04372-299916, 9489055623 Email-deanagritnj@tnau.ac.in | ACE&RI, Thanjavur |
| 8 | Horticultural College and Research Institute, Coimbatore-641003 Phone: 0422-66112707 E-mail: dearinotcbe@tnau.ac.in | HC&RI, Coimbatore |
| 9 | CSCELRI, Madurai | HFC4RI, Periyakulam |
| 10 | Horticultural College and Research Institute, Periyakulam, Theni Dist-625604 Phone: 04546-231726, 231319 E-mail: deanhortpkrn@tnau.ac.in | FIC&RI, Trichy |
| 11 | Agricultural Engineering College and Research Institute, Coimbatore-641003 Phone: 0422-6611255 E-mail-cleancaecbe@tnau.ac.in | AEC&RI, Coimbatore |
| 12 | CSCELRI, Madurai | AEC&RI,kumulur |
| 13 | Forest College and Research Institute, Mettupalayam-642301 phone: 04245-222010, 225064, 9443505844 E-mail: deanfornitp@tnau.ac.in | FC&RI, Mettupalayam |
| 14 | CSCELRI, Madurai | CSCELRI,Madurai |
| 15 | Horticultural College and Research Institute, Jeenur, Krishnagiri district Phone: 9489033685, 9788923254 E-mail: nodalhcrijnr@tnau.ac.in | HC&RI, Jeenur |
| 16 | Agricultural College and Research Institute Chettinad, Sivagangai District Phone: 04565-292993, 292994, 283080, 9443930865, 9489017511 E-mail: nodalacricnd@tanu.ac.in | AC&RI, Chettinad |
| 17 | Agricultural College and Research Institute, Keezh velur Nagapattinam District Phone: 9442627226, 9489011835 E-mail: nodalacrinagai@tanu.ac.in | AC&RI ,Nagapattinam |
| 18. | Agricultural College and Research Institute, Karur District Phone: 9489044377 E-mail:nodalacrikarur@tnau.ac.in | AC&RI, Karur |