This study investigates the position of adjuncts in sentences in English and Persian languages. The numbers of 136 sentences are collected from English story books and their Persian translations. The frequencies of each position (initial, middle, final) of adjuncts are determined by SPSS software and frequencies in English sentences are matched with Persian sentences. The results show that there is a meaningful difference between English and Persian regarding to place of adjuncts in sentences. In English the adjuncts are placed in initial and middle and final position, the initial and middle positions have the most frequency. In Persian the initial position is the most frequently used position. The frequency of middle position is less than initial and there is no adjunct in final position. The conclusion of this study is beneficial for translators, teachers and students that use the two languages.