This study aims to analyze the influence of Work Discipline and Organizational Culture on Employee Performance at PT. BYD Arista Elektrika Pondok Indah. Employee performance is a key determinant of organizational success, and understanding the internal factors that shape it is essential for effective management. The research employs a quantitative approach, with data collected through questionnaires distributed to 62 respondents representing employees of the company. The data were processed and analyzed using SPSS 27, applying both partial (t-test) and simultaneous (F-test) statistical analyses to examine the significance of the relationships among variables. The results demonstrate that Work Discipline has a positive and significant effect on Employee Performance, emphasizing that adherence to rules, punctuality, and consistent task completion contribute substantially to better performance outcomes. Likewise, Organizational Culture also exerts a positive and significant effect, indicating that shared values, norms, and behavioral patterns within the organization play an important role in shaping employee attitudes and productivity. Furthermore, the F-test findings confirm that both Work Discipline and Organizational Culture, when considered together, significantly influence Employee Performance. The coefficient of determination (R²) is 0.631, meaning that 63.1% of the variance in employee performance can be explained by these two variables, while the remaining 36.9% is attributed to other factors beyond the scope of this study. Specifically, Work Discipline contributes 57.8% and Organizational Culture contributes 51.4% to employee performance. These findings underscore the strategic importance of instilling strong work discipline while simultaneously fostering a supportive and cohesive organizational culture. The practical implication for management is the necessity to design policies and initiatives that not only enforce discipline but also build a positive work environment that motivates employees. Strengthening these aspects is expected to enhance overall productivity, improve organizational outcomes, and create a sustainable competitive advantage for the company.