The International Association of students in Agricultural and related Sciences (IAAS) is an international non-profit and non-governmental student society headquartered in Leuven, Belgium. It was founded in 1957 in Tunis by 8 countries. At the moment it is one of the world's biggest student organizations and one of the leading agricultural student associations. IAAS gathers students studying, majoring or researching in agriculture and related areas like environmental sciences, forestry, food science, landscape architecture etc. Its committees are spread in universities in over 40 countries worldwide.