Project-based learning has been variously integrated into EFL instruction to promote learners' language learning and skills. The objectives of this research study were to examine the effects of project-based learning using presentation on EFL undergraduate learners' speaking skills. Furthermore, this study sought to explore learners' opinions on the use of project-based learning using presentation. The participants of this study were 31 second-year undergraduate students who majored in Business English. The research instruments in this study included speaking tests, project-based learning instructions, questionnaires, and interviews. The obtained data were analyzed by quantitative and qualitative methods for the result interpretation. The findings of this study revealed that students' speaking skills had significantly improved after the project-based learning implementation. Moreover, the students expressed positive opinions towards project-based learning using presentation as it was perceived to have helped improve their speaking skills. The findings from the interviews revealed that the project-based learning using presentation was positive for learners' speaking skills according to their presentation tasks, scaffolding activities, and practice of integrative skills. A cooperative learning environment is perceived as useful for learners' speaking skill improvement. However, time constraint posed a major challenge in the study. Further studies are recommended to encompass a community-based context for speaking skill improvement. Instructional implications derived from the findings include implementing project-based learning using presentation in order to provide learners with an authentic English speaking context and to promote the integrated skills.