International Astronautical Congress (IAC) The International Astronautical Congress (IAC) is an annual conference organized by members of the International Astronautical Federation (IAF), created in 1951 to promote dialogue among scientists worldwide and to support international cooperation in all areas of space-related activities.

The International Astronautical Congress (IAC) has been held for The IAC has been held for 66 consecutive years and is the world's most prestigious event in the space industry. The IAF is a high level, large scale, wide impact, commercial value, IAF is 246 members from 62 countries, including space agencies, companies, social groups, associations and societies and other major members.

The International Astronautical Congress has a wide variety of sessions, including technical breakout sessions, highlight reports, and progress reports, covering the areas of space science and exploration, space applications and operations, space technology, space infrastructure, and space and society. Each conference attracts government officials, entrepreneurs, scientists, students and media from around the world.