At present, it is clear evidence that many students are conversant with digital devices in their learning activities. However, some teachers are facing problems of using digital devices in their teaching activities. For that reason, applying computer/ICT devices could assist instructors in improving their job performance which in turn, enhances students’ learning achievement. The purpose of the study was to investigate the influence of teachers’ computer literacy on their job performance. The specific objectives were: to determine the level of teachers’ computer literacy; to determine the level of teachers’ job performance; to examine the relationship between teachers’ computer literacy and their job performance; and to determine the impact of computer literacy on teachers’ performance. This study employed quantitative method survey design using questionnaires as instruments. Systematic random sampling technique was used in this study. A total of 185 teachers from senior secondary schools in Danko-Wasagu Local Government Area were involved as respondents. Data was analyzed using percentage distribution, mean value, correlation Pearson product moment, and multiple regression method. Findings showed that the level of teachers’ job performance is high; the level of teachers’ computer literacy is high; there exist a relationship between teachers’ computer literacy and their job performance; and that teachers’ computer literacy was a positive predictor of their performance. Conclusively, in order to increase teachers’ job performance, it is necessary to promote teachers’ access to computers/internet, knowledge and skills of operating computers as well as their attitudes towards using digital devices.