Sirindhorn International Institute of Technology (Thai: สถาบันเทคโนโลยีนานาชาติสิรินธร) (SIIT) is a semi-autonomous institute of technology established in 1992 within Thammasat University. It is located in Pathum Thani, Thailand. Known as one of the premier research universities in Thailand, it offers science, technology and engineering education, as well as related management programs. All are international programs, with English language as a medium of instruction.