Vocabulary is very important in language learning. Studies on Arabic language vocabulary mastery in Malaysia show that lack of teaching materials on effective vocabulary learning contributed to problems in teaching vocabulary faced by teachers, including at pre-university level. Hence this study was carried out to identify the need for designing a module for teaching Arabic language vocabulary for pre-university students based on Nation’s Four Strands theory. The survey approach was used with a questionnaire distributed for collecting data on the need to develop the module. The sample consisted of 63 pre-university Arabic language teachers, selected by purposive sampling. The research findings show that there was a need for designing the vocabulary teaching module for pre-university students based on the Four Strands theory comprising four elements, namely meaning focused input, meaning focused output, language focused learning and fluency development.