The Siouan language family is a group of Native American languages primarily spoken in the central United States. It includes languages such as Lakota, Dakota, and Osage. These languages are known for their complex grammatical structures and rich oral traditions. Siouan languages are historically significant, as they were used by various Indigenous tribes, including the Sioux and Crow. The family is divided into several branches, with some languages still actively spoken today, while others are endangered or extinct. Efforts are ongoing to revitalize and preserve these languages for future generations.