The present study was an attempt to investigate the effectiveness of using e-portfolio for developing fluency skills among first year secondary stage students. The design of the study was pre - post quasiexperimental group. The participants of the study consisted of 30 students representing one group (one intact class) at first year Al-Shoban Al-Muslemeen secondary school during the academic year 2018/2019. The materials and instruments used included: A checklist of EFL fluency skills required for first year secondary stage students, two EFL fluency tests (used as a pre and post test) and an analytic rubric for scoring them, and a teacher’s guide for using e-portfolio. The pre EFL fluency skills test was administered to the participants. The students were taught using e-portfolio to develop their fluency skills. Then, the posttest was administered. A quantitative data analysis was conducted; t-test was used to compare the means scores of the pre-test and the post-test of the study participants. Results showed that the participants' EFL fluency skills developed significantly as a result of using e-portfolio. Therefore, it can be concluded that using e-portfolio was effective in developing EFL first year secondary stage students' fluency skills.