The study was aimed to find out relationship between teacher motivation and students’ academic achievement at secondary school level. A sample of 950 secondary school teachers using population proportionate to sample technique was taken out of 3168 secondary school teachers teaching in high schools of five districts of Lahore Division in Punjab. Survey technique was used to collect data through a questionnaire Motivational Orientation for Teaching Survey (MOT-SIII). The academic achievement of the students was measured by taking two year results of grade 10 students in the annual examinations conducted by Board of Intermediate and Secondary Education Lahore (BISE). The collected data was analyzed by using mean; standard deviation and Pearson r. It was found that intrinsic motivation of teachers was having strong correlation with academic achievement of the students. It was recommended that in-service teacher training programs can serve as better source for the enhancement of intrinsic motivation level of teachers.