This Study aims to analyze affecting factors of the people’s decisions to use Trans Jogja Public Transportation. The subject in this study was Trans Jogja’s passengers that consist of college students and workers. In this study, sample of 100 respondents were selected using purposive sampling. Analysis tool in this study is statistic descriptive analysis. Analysis statistic descriptive was done by determining mean, median, mode and standard deviation. Based on the analysis that have been done by author, the result indicated that income, Trans Jogja fare, other public transportation fare, quality of service, and Trans Jogja shelter affecting the citizen decision in use of Trans Jogja.