In today’s economic world, human resources are the most valuable resource that organizations have. As a result, in order to improve teacher satisfaction, it is necessary to conduct research on what factors can affect teacher job satisfaction. The purpose of this study is to analyze the influence of teamwork, reward, and training and development on teacher job satisfaction. A quantitative approach was used in this study. The convenient sampling technique was employed in the study to collect 120 teachers from secondary schools in Mogadishu, Somalia. A questionnaire technique was used to collect data. Using the SPSS version 26 application, the researcher conducted a technical analysis of the data employing multiple linear regression. According to the findings of the study, teamwork, reward, and training and development all have an 85.9 percent positive effect on teacher job satisfaction. The conclusion is that the three variables play a role in increasing teacher job satisfaction.