This paper is devoted to examining the factors responsible for the low achievement in English as a foreign language (EFL) among Saudi students. While some of these factors are demographic variables that pertain specifically to the learners themselves, such as gender, age, motivation, attitudes, aptitude, anxiety, autonomy, learning strategies, and learning style, most are external and outside the learners’ control. These external factors are particularly represented by sociocultural factors, such as the influence of Arabic as the first language (L1); religion, culture, and society; instructional variables, such as teacher behavior and teaching styles, the curriculum, and the teaching methods; and finally, problems with the educational system in Saudi Arabia, such as overcrowded classes, lack of teacher training, and a lack of technology. This paper begins by emphasizing the importance of English language learning for Saudis, followed by an analysis and a discussion of the factors that might explain their lack of achievement. The paper concludes by presenting some implications and offering recommendations for EFL practitioners and policymakers in the Kingdom of Saudi Arabia (KSA) to address the factors contributing to low EFL achievement among Saudi learners.