In the domain of environmental remediation, the search for sustainable and effective methods to mitigate heavy metal pollution continues to evolve. Among these pollutants, manganese (Mn) poses significant challenges due to its widespread industrial use and potential health hazards when present in excess concentrations. Traditional physiochemical remediation techniques often fall short, either due to high costs, limited efficacy, or adverse environmental impacts. In response bioremediation has become a viable strategy, leveraging the innate capabilities of microbes and plants to degrade or sequester manganese contaminants. Bioremediation utilizes the inherent potential of metabolism of living organisms either change pollutants into less toxic forms or render them inert in the environment. This strategy not only offers potential cost savings compared to conventional methods but also minimizes disturbance to ecosystems while enhancing soil and water quality. The diversity of microorganisms involved in manganese bioremediation is vast, ranging from bacteria and fungi to algae and plants, each with unique mechanisms for manganese uptake, oxidation, or reduction. This chapter explores the fascinating world of manganese bioremediation, delving into the mechanisms by which microorganisms interact with manganese contaminants. It examines key microbial species known for their manganese-oxidizing or accumulating capabilities, highlighting their roles in natural and engineered environments. Furthermore, the chapter discusses recent advancements in biotechnological applications, including genetic engineering of microorganisms for enhanced manganese remediation efficiency. As we navigate the complexities of environmental stewardship in the twenty-first century, understanding and harnessing bioremediation’s ability to eradicate manganese also opens the door to long-term sustainable practices that protect our ecosystems for future generations to inherit.