This paper aims to examine the use and functions of Kurdish (L1) in English as a Foreign Language (EFL) classes within a Kurdish educational context. Languages function differently across varied contexts, and prior studies have highlighted several reasons for using L1 in EFL classrooms by both students and teachers. Similarly, there are numerous reasons and functions for incorporating Kurdish in English language classes. This study specifically investigates the use and functions of Kurdish among Kurdish EFL university students and teachers at the University of Human Development in the non-English departments of IT and Computer Science, located in the Iraqi Kurdistan Region. The researcher employed two distinct questionnaires for EFL students and teachers and analyzed the data using SPSS. The study involved twenty university-level English language teachers and ninety Kurdish EFL students, randomly selected from the student population. The findings indicate that most Kurdish EFL students held positive views regarding the use of Kurdish in English classes for purposes such as explanations, instructions, skill development, exam preparation, and motivation. Conversely, most Kurdish EFL teachers preferred to use Kurdish infrequently or occasionally, believing that Kurdish should generally not be used in most teaching and learning situations. However, they did acknowledge the benefits of using Kurdish to address unusual behavior and occasionally to boost students’ confidence and motivation.