Sort of. The Lakota are a subset of what is known as the "Sioux" . The Sioux speak three different dialects, the Lakota, Dakota, and Nakota. "Sioux" comes from the Ojibwe name for the tribe, which means "little snakes." "Lakota", "Dakota", and "Nakota" is really one word, but spoken differently based on the dialects of the tribes.