Demographic Window is relatively a short time period in the age transition of a country in which the ratio of population at activity ages has its maximum share. This period provides an exclusive chance for the economic growth of the country. Iran's populations have experienced this period since 2006 and will remain in it up to 2046, and then, will become an aged population. The trend of Iranian women's labor force participation shows that it was 12.6% in 1966 and got to 12.4% in 2006 and has not increased during the past 40 years. In comparison with other countries, Iranian women's participation is considerably low as well as with Iranian men's participation. Many studies emphasize the positive and strong effects of population at activity age on GDP, and also there are favorable potential to economic growth in the Demographic Window period and part of this potential is related to taking advantage of women's labor force. It is possible for Iran to use this Demographic Window to accelerate economic growth and development, if there is proper planning to benefit from this huge share of women at activity age.