The significance of using language learning strategies in general and vocabulary learning strategies in particular is quite clear to both language learners and language specialists. Being familiar with and making use of a range of different vocabulary learning strategies is a great aid for EAP learners in dealing with unknown words. The present study deals with vocabulary learning strategies used by EAP students at Guilan University, and, it aims at investigating the most and the least frequently used vocabulary learning strategies among Iranian EAP students majoring in the field of Social Sciences. It also seeks to find out whether there are difference between male and females regarding their use of these strategies. Data collection was done using a modified version of Schmitt (1997) Vocabulary Learning Strategies taxonomy in the form of a questionnaire, and asking 55 students to complete it. The results indicate that the EAP learners who took part in this study use more or less the same kind of vocabulary learning strategies with a rather similar frequency of usage, and also the issue of gender makes no significant difference in their strategy use.