The leadership attitude applied by managers in leading institutions in bank X has a huge influence on the success of these banking institutions in facing challenges that arise. This makes the leader of bank X plays a key role in formulating the company's strategy, so that its role will affect the company. The formulation of the problem in this study is whether the Bank X Branch Y Leadership Style Affects Employee Performance. How much Bank X Branch Y Leadership Style Affects Employee Performance. This research is a type of quantitative research. The method used in this study is a survey method, which is a method of collecting data by taking samples from the population and using a questionnaire as the main data collection instrument distributed by researchers. The results showed that the leadership style obtained a value of t count 4.792 (positive) that is influential and the calculated probability value 0.000 <0.05 probability determined, means significant. The R-Square Determination Coefficient value is 0.377 which means that 37.7% of the variation in value of employee performance is determined by the leadership style variable. While the rest (100% - 37.7% = 62.3%) are other variables not included in the equation model. Keywords: Leadership Style and Employee Performance.