1971-1980
- 1972 Environmental & Chemical Engineering, Fluid & Energy Engineering, Geotechnical Engineering; Structural Engineering & Mechanics and Systems Engineering & Management are established as new divisions.
- 1973 His Majesty King Bhumibol Adulyadej of Thailand graciously presides over the opening of the new campus in Pathumthani province
- 1974 The AIT Conference Center, a gift from the Government of Japan is inaugurated.
- 1975 At the 18th graduation ceremony, the Institute confers its first Honorary Degree, the degree of Doctor of Engineering, on His Majesty King Bhumibol Adulyadej of Thailand
- 1975 The Regional Experimental Center opens
- 1976 The Regional Computer Center is opened
- 1977 The Regional Documentation Center is established
- 1978 Computer Applications and Energy Technology divisions are established
- 1979 The Institute celebrated its Twentieth Anniversary. Student enrolment had increased to 485 students.
- 1980 The Continuing Education Center is opened.