This study tries to achieve the objectives of 1) analyzing the extent of the influence of religiosity towards decision making of becoming a customer of BNI Syariah Jakarta Utara 2) analyzing the extent of corporate image towards decision making of becoming a customer of BNI Syariah Jakarta Utara 3) analyzing the extent of service quality towards decision making of becoming a customer of BNI Syariah Jakarta Utara. This study employs explanatory quantitative research intended to explain the relationship among variables to examine a hypothesis. The population in this study is all customers of Bank BNI Syariah Jakarta Utara during the period of December 2017 amounted to 41,296 customers with a total of samples of 100 respondents. In order to answer the problems formulated in this study, multiple linear regression analysis is conducted. Based on the discussion and analysis, the result reveals several conclusions as follows: 1) Religiosity provides influence towards decision making of becoming a customer of BNI Syariah Jakarta Utara, which means that the higher level of religiosity a person develops, the decision making of becoming a customer of BNI Syariah Jakarta Utara also rises. 2) Corporate image of BNI Syariah provides influence towards decision making of becoming a customer of BNI Syariah Jakarta Utara, which means the better corporate image BNI Syariah is able to maintain, the decision making of becoming a customer of BNI Syariah Jakarta Utara also rises 3) Service quality provides influence towards decision making of becoming a customer of BNI Syariah Jakarta Utara, which means the better service quality offered, the decision making of becoming a customer of BNI Syariah Jakarta Utara also rises 4) Religiosity, corporate image and service quality simultaneously provides influence towards decision making of becoming a customer of BNI Syariah Jakarta Utara, which means the changes in variables of religiosity, corporate image and service quality also changes the decision making of becoming a customer of BNI Syariah Jakarta Utara.

Keywords : Religiosity, Corporate Image, Service Quality and Customer Decision.