Previous researchers have reviewed brand value, including during decision-making on mergers and acquisitions, but there is a lack of reviews in which brand valuation has been explored post-merger. The purpose of this review was to address this gap in the literature by presenting a synthesis of the literature on brand valuation post-merger across different industries. To conduct this review of literature, I used a modified systematic review method and conducted a descriptive analysis, utilizing existing literature to obtain evidence as well as to enhance current understanding. From the databases queried, I discovered several studies that met the criteria for inclusion. Findings showed that, while the importance of valuing brand equity in the merger and acquisition process has been noted, few studies focus on this process itself. Findings showed that brand valuation is affected by the merger and acquisition process, resulting in various brand value outcomes. Additionally, across different sectors, the impact of brand valuation on customers post-merger was similar. The findings of the review highlight the need for executives preparing for a future merger and acquisition to recognize that a successful merger requires accurate brand valuation both during the merger and acquisitions process and post-merger, in addition to effective strategies for integrating the targeted company's brand with the acquirer company.