The present study was conducted to ascertain teaching effectiveness of female teachers in the light of their teaching aptitude and extraversion-introversion personality. In all, this study was carried out on 320 female teachers working in government run primary schools of Raipur district. Hindi version of Eysenck Personality Questionnaire (EPQ) prepared by Jitendra Mohan (1985) was used to assess extraversion while Hindi version of Teaching Aptitude Test Battery prepared by Singh and Sharma (1986) was used to assess teaching aptitude of selected female teachers. Teacher effectiveness was assessed by Teacher Effectiveness scale prepared by Kumar and Mutha (1983). Results showed significant main effect of extraversion and teaching aptitude on teacher effectiveness but interaction effect of these two variables was not observed on teacher effectiveness. It was concluded that extraversion and teaching aptitude alone and not in interaction with each other influence teacher effectiveness in a group of female teachers.