Mandailing language is an Austronesian language spoken primarily by the Mandailing people in North Sumatra, Indonesia. It is part of the Malayo-Polynesian branch of the Austronesian language family and has several dialects, reflecting the diverse communities within the region. The language is used in daily communication, cultural practices, and traditional ceremonies. It plays a crucial role in preserving the identity and heritage of the Mandailing community. Efforts are being made to document and promote the language, especially among younger generations, to ensure its continued use and vitality.