The research aims to find out the effect of certification, and work motivation on teacher performance in the Teacher Working Group (KKG) of Lempuing sub-district Ogan Komering Ilir partially and simultaneously. Research hypothesis (1) certification affects teacher performance, (2) work motivation affects teacher performance, (3) certification and work motivation jointly affect teacher performance. This research method is quantitatively correlational, with the research population of all certified teachers in kkg Lempuing subdistrict amounting to 65 teachers. Data is collected with documentation and questionnaires. Analyzed using descriptive statistics, and hypotheses analyzed using simple regression equations and multiple regressions with the help of SPSS. 24. The results showed that: (1) there is a significant influence of certification on teacher performance, (2) there is a significant effect of work motivation on teacher performance, and (3) there is a significant effect of teacher certification and motivation on teacher performance in KKG Lempuing district Ogan Komering Ilir.