The present study aims to investigate the motivational factors which are directly involved in learning English language among Bachelor of Science (B.S) first year undergraduate students of Institute of English Language and Literature, Shah Abdul Latif University, Khairpur, Sindh Pakistan. The study focuses on intrinsic and extrinsic motivation factors, which motivate students to learn English language. The questionnaire has been administered among students (N=70) which are based on 30 Likert scale items. Attitude Motivation Test Battery/AMTB (Gardner, 2004 English version) has been used in this regard. SPSS has been used to quantify the data. The semi-structured interview has been conducted by using purposive sampling for in-depth study from (N= 6) students. The results reveal that the students have extrinsic reasons as dominant factors for motivation to learn the target language. The dominant extrinsic factors which were investigated among the students are to get a good job and to qualify exams. The intrinsic factors such as learning English for developing self-image and communication skills in English with proficiency in their daily routine work are responsible for motivating students to learn English language.