Over the years, various pedagogical methods and techniques has been put into practice in order to liven up the lessons in an English as Second Language (ESL) classroom. One of the most frequently used tool in the teaching and learning process is digital storytelling (DST). This systematic review focused on analysing and reviewing twenty relevant studies on the impact of DST on ESL learners' speaking skills published from 2019 to 2023. These studies employed different research designs, including quasi-experimental, classroom action research and survey study, and participants who partook were of different language backgrounds, age and competency levels. Among the four language skills, speaking skill was spotlighted. The findings from these articles listed the positive effects and benefits that proved that DST as a practical aid in improving ESL learners' speaking skills. Not only DST enhances learning skills, it motivates and encourages pupils to learn from its fun and meaningful features. Nevertheless, several challenges and limitations were also pointed out such as time constraints and the training needed for teachers. In a nutshell, this review highlights on the cruciality and benefits of using DST as an educational tool in affecting ESL learners' speaking skills. Implications and recommendations for future studies are also discussed.