This study reports on an investigation into the impact of strategy-based English language instruction (SBELI) on the language proficiency of gifted learners. The participants were students who were identified as gifted and thus received additional out-of-school training for a few days a week in Adana Science and Arts Centre. Their ages ranged from 10 to 13. One experimental group (n = 17) and one control group (n = 17) were designed to explore the possible English performance differences between the learners who were exposed to SBELI, which included 11 language-learning strategies for eight weeks, and those who were not. Data were collected through proficiency exams, written accounts of participants in the experimental group, think-aloud protocols and an open-ended questionnaire. The findings obtained revealed that SBELI produced a positive impact on the language proficiency of the gifted students and enabled them to enhance their already established attitude to make their language learning quick, easy, effective and enjoyable.