Manganese(II) bromide is primarily used in organic synthesis as a catalyst or reagent in various chemical reactions. It is particularly effective in facilitating the formation of carbon-carbon bonds, making it valuable in the production of complex organic molecules. Additionally, it is employed in the preparation of other manganese compounds, which are used in industrial processes such as metal surface treatment and electroplating. In research, it serves as a precursor for studying manganese-based materials with potential applications in magnetism and energy storage. Its hygroscopic nature also makes it useful in moisture-sensitive reactions, where it can act as a desiccant or drying agent.