The performance of a bank serves as a guarantee in maintaining its market position amid the intense competition among banks, further intensified by the increasingly widespread issue of green banking. The purpose of this study is to analyze the influence of Green Human Resource Management and Leadership on Employee Performance mediated by Organizational Culture: A study at PT Bank X in Jakarta. The research design used is causal, which explains the relationships between variables. The research was conducted at PT Bank X in the Jakarta area, involving 155 employees as the sample. The sample was selected using simple random sampling. The data used are primary data obtained from respondents’ questionnaire responses. The research methods employed are descriptive statistics and Structural Equation Modeling (SEM) analysis using Partial Least Square (PLS) version 3.0. The results of the study show that Green Human Resource Management has a positive and significant influence on Organizational Culture; Green Human Resource Management has a positive and significant influence on Employee Performance; Leadership has a positive and significant influence on Organizational Culture; Leadership has a positive and significant influence on Employee Performance; Organizational Culture has a positive and significant influence on Employee Performance; Green Human Resource Management has a positive and significant influence on Employee Performance mediated by Organizational Culture; and Leadership has a positive and significant influence on Employee Performance mediated by Organizational Culture. Descriptive analysis results indicate that respondents’ assessment levels of Green Human Resource Management, Leadership, Organizational Culture, and Employee Performance at PT Bank X in Jakarta are at a positive level.