The need for competent and qualified trainers is of paramount importance for an effective technical training system that, in turn, helps to produce competent and employable graduates for the country's economy. The purpose of this study is to investigate the effects of trainers' competence on the employability of polytechnic college graduates in Dire Dawa. The study employed a descriptive-correlational-explanatory research design with a quantitative research method. The sample for quantitative data consisted of 351 randomly selected graduates, trainees, trainers, and administrators. Both descriptive and inferential statistics were used to analyse the data. The findings revealed that trainers' competence was positively correlated with graduates' employability. Specifically, predictors such as knowledge-related competence, assessment-related competence, skill-related competence, and managerial competence were found to have significant and positive effects on the employability of polytechnic college graduates in Dire Dawa. Therefore, the study recommends that the Dire Dawa city Labour Skill and Technology Development Bureau and Polytechnic colleges should give greater emphasis on improving trainers' competence, which in turn enhances the employability of graduates.