The main concern of the present study was to compare Iranian monolingual and bilingual EFL students' listening comprehension in terms of Latinized Persian subtitling of English movie to see whether there was a significant difference between monolinguals and bilinguals on immediate linguistic comprehension of the movie. Latinized Persian subtitling was representing Persian language in Latin script. To achieve this end, an ex post facto design was employed. The homogenized participants of this study were 24 Persian monolingual students and 22 Azeri-Persian bilingual students. One listening comprehension test which was based on the linguistic information of the movie was administered to both groups of monolinguals and bilinguals. The results of Mann-Whitney U test revealed a significant difference between two groups; that is, monolinguals outperformed bilinguals on immediate linguistic comprehension of the movie. Finally, the study concludes with some pedagogical implications and recommendations for further research.