This research aims to explain the effects of good university governance and organizational culture toward lecturer performance and its impact on private university performance in the city of Lampung, province of Lampung, Indonesia. This research employed quantitative method by developing valid and reliable instruments. The constructs were measured by 1 to 5 Liker scale instrument. The scale represents the rank of strongly disagree to strongly agree. The unit of analysis of this research were2,093lecturers who were appointed additional tasks as the university administrator at private universities. The total respondents were 240, selected purposively from 2,093. The results of the research revealed that there were positive and significant effect of good university governance and organizational culture toward lecturer performance. There were no effects of good university governance and organizational culture toward private university performance. There was a positive and significant effect of lecturer performance towards private university performance. The lecturers performance was a mediating variable in this model. In order to increase private university performance, it was strongly recommended to increase lecturer performance. can be increased by increasing good university governance and organizational culture. However, it is recommended to improve organizational culture first, then to improve good university governance because the total effect of organizational culture was 0.62 bigger than total effect of good university governance was only 0.43.