Literature review and theoretical framework are essential for both academic and professional research. The success of a research project hinges on the robustness of the literature review and the logical coherence of the theoretical framework. Despite the importance of these research activities, few young researchers understand how to prepare and use literature reviews and theoretical frameworks. The Lecture Note on Research Methodology aims to contribute to filling observed gaps in conducting and reporting academic and professional research. This Book, Literature Review and Theoretical Framework is the third (Book 3) of the series, Lecture Note on Research Methodology published by the author.