The National Institute of Siddha ( NIS ), located in Chennai, is a center of excellence with research and higher education in Siddha System of Medicine as its mission.

The NIS aims to provide the best possible post graduate education in Siddha, by putting together a team of distinguished faculty members and building a quality resource base. It intends to develop curricula so that the benefits of the traditional science can be applied in the present day. The NIS proposes to undertake research to enhance the acceptability of the Siddha formulations and to prove the lack of toxicity of the Materia Medica. Plans are afoot to forge interdisciplinary alliances with various branches of modern science like Microbiology, Bio-technology, etc. National Institute of Siddha ( NIS ) has conducted Medical Entrance Examination for the admission of MD ( Siddha ) Courses.