Research has not investigated the motivation of students toward learning Persian as a foreign/second language. This study examines the integrative, instrumental, intrinsic, and extrinsic types of motivation among language learners learning Persian as a second language. A questionnaire consisting of 40 questions, adapted from Gardner (2001), Ryan and Deci (2000), and Noels et al. (2001), was used to collect the required data. Statistical procedures were followed to analyze the data from 135 (59 females and 73 males) language learners. Results showed that integrative and extrinsic were respectively the most and the least significant forms of motivation among these participants. They reasoned that they mainly learn Persian language to understand Persian art, literature and history, increase their knowledge, and communicate with Iranians. Variables such as gender, education, and age showed significant differences among the males and females concerning instrumental and intrinsic types of motivation. Furthermore, whereas the results indicated significant variation between the participants’ education levels and their integrative motivation, there was not any significant relationship between the age and motivation.