The study was conducted to establish the level of corporate governance practices of SACCOs in Nansana Municipality, Wakiso District. The study used Jensen and Meckling (1976) agency theory to analyze the corporate governance practices. The study involved 72 respondents from 24 SACCOs studied and it adopted cross-sectional and correlation research designs using both quantitative and qualitative research approaches. Data analysis was done using SPSS and interpreted using mean range 5point Likert scale, Pearson correlation analysis and multiple regression analysis. The findings showed moderate levels of corporate governance with a grand mean of 2.8950 and std. deviation of 0.21580 and the level of sustainability of SACCOs was also moderate with a grand mean of 2.6076 and std. deviation of 0.39982. The study concluded that corporate governance significantly influences sustainability of SACCOs and therefore recommended that government, SACCO apex bodies and SACCO boards should enhance corporate governance so as to make SACCOs sustainable and stronger institutions.