This study aimed at determining and measuring effect of communicative role of women on the buying decision process of Saudi family, as well as determining the statistical differences in the role of such women , and the criteria used by Saudi women in buying decision. The study population consisted of all Saudi females living in city of Riyadh estimated at 2.2 million in year of 2016. The sample reached to 387 of Saudi females, and simple random sample was used. The study showed that there is a significant statistical role of the Saudi women in the buying decision of Saudi family, and also it was showed that there are a statistical differences in this role according to years of marriage and number of children in the Saudi family, but there are no statistical differences in the buying criteria used by Saudi women.   Finally, the study recommended a set of marketing implications and suggestions that help the producers and advertisers to design their advertising, products and stores in a way that take the interests the psychological and personal needs of Saudi women. 

KEYWORDS: Communicative Roles, Purchasing Decision , Saudi Women, Saudi Family.