Bartın, Karabük and Zonguldak provinces show similar characteristics in economic, social and geographical terms. The purpose of this study is to determine the effects of financial attitudes and behaviors of individual investors on investment decisions in Bartın, Karabük and Zonguldak provinces. In the study, it has been tried to determine whether financial attitudes and behaviors differ according to provinces within the scope of analysis and investors demographic characteristics. For this purpose, a total of 600 individual investors were surveyed. In study first of all, validity and reliability analyzes of the scales were performed. T-test, ANOVA and multiple regression analyzes were used to test hypotheses. As a result of the study, it was determined that financial attitudes and financial behaviors significantly affect the individual investor's investment decisions in a positive way.