The third conference on millimeter-wave and terahertz technologies, organized by The Center of Excellence on Radio Communication Systems of Amirkabir University of Technology and The Center of Excellence on Applied Electromagnetic Systems of the University of Tehran, will be held in the Department of Electrical Engineering of the Amirkabir University of Technology. The conference provides a forum for researchers and practitioners to exchange research achievements and to share development experiences. Technical papers describing original works in research, development, and application of millimeter-wave and terahertz technologies are solicited. The conference will include special sessions and workshops.