Market Access, Promotion, and Landowner Education Support for Your Regionally Underserved Producers Act or the MAPLE SYRUP Act This bill reauthorizes the Acer Access and Development Program (Acer) at the Department of Agriculture through FY2028. The bill also changes the name of Acer to the Maple Research and Market Promotion Program. The Acer competitive grant program promotes the domestic maple syrup industry through activities associated with research and education related to maple syrup production, natural resource sustainability in the maple syrup industry, and the marketing of maple syrup and maple sap products. Acer also provides grants to encourage owners and operators of privately held land containing species of trees in the genus Acer to initiate or expand maple sugaring activities, or to voluntarily make the land publicly accessible for maple sugaring activities.