Journal of English Education and Teaching (JEET) e-ISSN: 2622-5867 p-ISSN: 2685-743x Volume 5 number 1, 2021 Page 61-73 Correlation between EFL Students’ Language Aptitude and their English Proficiency Kartini Universitas Islam Kalimantan angeline_tini@yahoo.com Farah Natchiar Mohd Khaja Universiti Pendidikan Sultan Idris farah.natchiar@fbk.upsi.edu.my Corresponding Email: angeline_tini@yahoo.com Abstract This study is designed to investigate the correlation between EFL students’ language aptitude and their English proficiency. The data were collected from sixty-five students in the end of their eighth semester at the English department in faculty of teacher training in UIN Raden Fatah Palembang. The students took a foreign language aptitude test (both explicit and implicit LLAMA tests) and an English proficiency test (TOEFL). The collected data was analyzed using Pearson-Product Moment correlation test. It reveals that Pearson correlation between LLAMA explicit scores and TOEFL scores is significant at 0.676, P  0.01 (2-tailed), so the correlation between LLAMA explicit scores and TOEFL scores is considered moderate. In addition, the correlation between LLAMA implicit scores and TOEFL scores is significant at 0.422, P  0.01 (2-tailed), therefore, the correlation between LLAMA implicit scores and TOEFL scores is considered low. The moderate degree of significance of correlation between explicit language aptitude and TOEFL score shows thatthe explicit language aptitude is the better predictor of language proficiency compared to implicit language aptitude.The literature seems to support the notion that the higher LLAMA explicit score, the better the students will achieve in learning a foreign language. The literature also supports the idea that implicit language aptitude is a more complicated cognitive task than explicit language aptitude. Keywords: Language aptitude, language proficiency, LLAMA Introduction One of the main tools of measurement that examine and judge the ability of a candidate to understand and use English language in academic situations is TOEFL. TOEFL is a standardized test that measures a test-takers’ mastery of the English language. In relation with language proficiency, it can be claimed