Objectives: The aim of this study was to investigate the relationship between English language proficiency and academic achievement of undergraduate medical sciences students in Sudan at Karary University. Methods: A cross sectional survey was obtained including 275 students selected from Karary University students, from faculty of Medicine, Dentistry, and Pharmacy of the second, third, fourth, and fifth undergraduate years. Stratified systemic random sampling was done, self- administered questionnaire with content analysis were used as a research instruments, to collect information regarding their English language level measured by the English Language grade the student obtained from his/her final high school exam, first and second university semesters and academic achievement measured by the student’s GPA from the current university level. Gathered data were analyzed using SPSS® version 18, data were analyzed using Pearson Correlation coefficient to examine the degree of relationship between English language proficiency and academic achievement. Linear Regression Analysis was also used to determine the impact of English language proficiency on students’ overall academic achievement at confidence level of 95%. Results: The results revealed that English language proficiency has a positive significant relation with the academic achievement of students and that there is a positive impact of English language proficiency on student’ overall academic achievement, which means that English language proficiency is one of the factors that affects students’ academic performance. Conclusions: There is a significantly positive relation between English language proficiency and the academic achievement of Sudanese medical sciences students at Karary University. Present study identified the positive correlation between English language proficiency of students and their academic achievement and highlights the impact of English language proficiency on overall students’ academic achievement.
