Abstract: Vocabulary learning strategies have been considered as something that exists in every English learner with different levels. Students' strategies in learning English can show what they are focusing on. Vocabulary learning strategies are part of learning strategies that are fundamental in language learning, where vocabulary is the basis of the foundation. This study aimed to investigate the relationship between Vocabulary Learning Strategies (VLS) employed by students studying English in Riau Archipelago Province and their vocabulary skills and size. A total of 289 students has been taken from various universities in Riau Archipelago Province participated in this study. Data has been analyzed through quantitative methods using two measurement instruments: the vocabulary learning questionnaire used to find students 'VLS preferences and the Vocabulary Level Test (VLT) used to estimate participants' English vocabulary sizes. Data analysis found that there is a significant relationship between the use of several types of learning strategies and vocabulary sizes among tertiary level students. This research proposes a new model of vocabulary learning strategies that can increase vocabulary levels. Students with higher Strategies to retain the knowledge of newly learned vocabulary items ideally increase the level of English vocabulary.