Within the existing literature of vocabulary research, there has long been a search for the characteristics of the good learner (Ellis, 1994, p. 546-50; Naiman et al., 1996; Stern 1975, p.316), which was most probably triggered with the observation that some learners somehow outperform the others receiving the same training (Pavicic-Takac, 2008, p. 58). This boasted the interest in the strategies learners employ to learn a new language. This interest also applies for vocabulary learning, which is a crucial element of language learning (Moir & Nation, 2008). By determining the shared pattern of strategies employed by good learners, it will be possible to distinguish the effective strategies used in vocabulary learning. In this respect, the purpose of this research is to determine the English vocabulary learning strategies (VLSs) used by Turkish graduate students with high vocabulary-levels. To this end, data were collected from 128 Turkish graduate students pursuing their master’s or doctoral education at 27 universities in Turkey and 21 universities in the UK via Vocabulary Levels Test (Schmitt et al., 2001, p. 82-88) and a 54-item Vocabulary Learning Strategies Questionnaire, developed by the researcher. Students’ vocabulary levels were determined by calculating their correct answers at each of the five word-levels. The study data were analysed and 53 good learners who achieved 24 and above at all levels were identified. An average score of 24 and above out of 30 items meant the student had mastered that level. The results revealed that good learners most commonly used Discovery-Determination strategies which are employed to determine the meaning of a word when one meets it for the first time. Another finding of the research was that language learning context affected the overall use and choice of good learner’s VLSs. In the overall usage of VLS’s, a higher frequency of VLS’s were employed by EFL learners than their ESL counterparts. In the overall choice of VLSs, good learners from both the ESL and EFL context chose to use Discovery-Determination strategies and Consolidation-Metacognitive strategies more frequently than the other strategy groups.