Native American mythology was a set of beliefs followed by Native Americans.
Some parts of Native American mythology involved the medicine wheel and the medicine bundle. (VOY: "The Cloud", "Cathexis", "Initiations", "Basics, Part I")
In 2378, Seven of Nine was given a dreamcatcher by a holographic Commander Chakotay. Seven noted that the dreamcatcher was a part of Native American mythology, used to ward off nightmares. (VOY: "Human Error")