Purpose: This review is conducted for finding the gap for detailed study of Talent Management (TM), Succession Planning (SP) and Organizational Sustainability (OS). In the current economic environment, organizations are struggling to find a solution to achieve OS through TM and SP in turn. These three variables could be related to each other. Several studies have already been done on these key words which explains the impact of one on other two. Talent Identification, Talent Development and Talent Retention are the three major phases in Talent Management Process under Human Resource Development. These developed talents are considered for Succession Planning of the organization, which is ultimately affecting the sustainability of the organization. There are several challenges faced in the past to define and implement these HR processes. This study is all about establishing the gap after review of literatures on the subject. Design/Methodology/Approach: Several (44 in numbers) literatures, including Articles/Research Papers/Book Chapters from various sources viz. Scopus, Research Gate, Google Scholar, etc. were referred to and studied in detail. The selection of the published literatures was based on considering the key words - Talent Management (TM), Succession Planning (SP) and Organizational Sustainability (OS). There were thousands of literatures available in different languages for each separate keyword. The year of publication is considered between year 2020 to 2025 for inclusion. Whereas the literature in English language was filtered for the purpose. The list of articles and literature were limited to open access only. Findings: The review encompasses that there have been studies conducted related to the subject with recommendation of various HR practices of TM for SP. The importance of TM on Organizational Sustainability (OS) is also discussed in the past. There is still a gap to study and understand the relationship between these terminologies. The role of TM and SP to achieve OS is yet to be established. The impact of Performance Management needs to be accessed for performance of organization and its sustainability. Practical implications: This review would lead to a thorough and in-depth analysis of the literatures published and available currently on the subject Talent Management, Successful Succession Planning and Organizational Sustainability. Originality/value: This literature review encompasses the traditional HR practices of Talent Management practices and Performance Management, in particular, and identifies the challenges to connect it with Succession Planning and Organizational Sustainability.