This paper illustrates the constraints of the curriculum delivery of Arabic as a Foreign Language (AFL) in the United Arab Emirates Senior School. As the UAE is one of the Arab countries, so the Arabic language is a key subject of the national curriculum which compulsory for students in all year groups for both types of students, local citizens and residents. The aim of this study is to investigate the constraints that face the teaching and learning of AFL, such as, teaching AFL speaking, understanding pupils? differentiation, learning resources, classroom activities, teaching methods, and speaking assessment. A qualitative research methodology is employed; a semi-structure interview was the main tool with a sample of 2 heads of departments, four AFL teachers and 6 students. The main research question is ?what are the constraints of curriculum delivery of AFL in the UAE?? This study provides solutions to the discussed constants in order to improve the quality of curriculum delivery of AFL as well as its quality of teaching and learning.