Following the successful holding of the previous International Conferences on Acoustics and Vibration which highly welcomed by experts and students; it is our honor to announce that the 6th International Conference of Acoustics and Vibration, ISAV2016, is held by Iranian Society of Acoustics and vibration and K. N. Toosi University of Technology in Dec. 2016 in Tehran. Certainly, such conferences can provide an excellent opportunity for meeting some of the most experienced scientists, researchers and engineers, from inside or outside of Iran, to share their latest scientific achievements and technological developments in the different branches of the acoustics and vibrations in order to enhance the motivation and knowledge of the students and interested people in the mentioned field. Some of the pivotal parts of the conference are; keynote presentations from Iran and other countries, contributed oral and poster papers, a specialized commercial exhibition, a number of technical workshops, and a student competition for selection of the best BSc, MSc and PhD theses in acoustics and vibration. On behalf of the organizing committee, it is a great pleasure for us to invite you to participate in this special event. We look forward to seeing you in Tehran at ISAV2016.