: Effect of Banking Service Quality (BSQ) Dimensions towards Bank Customer Satisfaction. This study aims to determine the effect of Banking Service Quality (BSQ) to the customer satisfaction of BPD Bank in DIY. This research is a survey research with a sample of 1.536 respondents. The sample was taken by purposive sampling technique. Data collection instrument was questionnaires and analyzed using multiple regression. The results showed that six dimensions of BSQ simultaneously gave positive and significant impact on customer satisfaction. If seen from each dimension individually; the highest influence came from the reliability dimension and the lowest dimensions were from Access and Services Portfolio dimensions. For the national servants (PNS) customers, the BSQ six dimensions simultaneously gave a positive and significant impact on customer satisfaction; the highest influence came from the reliability dimension and the lowest was from portfolio services dimension. For the non national servants, the BSQ six dimensions simultaneously gave a positive and significant impact on customer satisfaction; the highest influence came from the reliability dimension and the lowest was from portfolio services dimension
