Recent archaeological excavations in Iran have contributed fundamentally to our understanding of the economic subsistence patterns in man's earliest communities. Excavations at the sites of Tepe Yahya in Kerman, Ali Kosh in Khuzistan, and Ganj-i-Dareh in Western Azerbaijan, to name but a few within different environmental zones and ecological niches, show that within the area of present-day Iran the cultural and economic transition from an earlier subsistence of hunting and gathering to settled village agricultural communities took place. This transition has been documented in other areas, i. e. Palestine, Anatolia, of Southwestern Asia. The development from a hunting and gathering economy to settled village agricultural productivity, often referred to as the ‘Neolithic Revolution’, was not an historical event (taking place in a moment of time) nor restricted to a single geographical area, but a cultural process which necessitated millennia for its achievement. The important role which Iran played can perhaps best be documented by summarizing the developing economic subsistence patterns in three loosely defined periods of time about 7000, 6000, and 5000 B.C.