The current study's objective examines the effectiveness of using a Think-Aloud strategy in improving Saudi EFL learners' reading comprehension and attitudes towards learning. A quantitative study with a quasi-experimental design was implemented through applying two different instruments: Reading Comprehension Skills Test and Attitude Scale towards learning EFL. The study adopts a pre-post control group design where forty students were randomly assigned to either a control or an experimental group. Students of the experimental group were instructed by using metacognitive Think-Aloud strategy, whereas, the control group received traditional treatment such as skimming and scanning techniques. The findings of the study showed that the attitudes and reading comprehension skills of the experimental group improved significantly as opposed to the control group. The study gives more insight into the importance of applying a Think-Aloud strategy in teaching reading comprehension inside EFL educational context. The study also suggests recommendations for EFL teachers to increase the efficiency of applying this strategy through their teaching procedures.