Petun

thumb|Map of the Petun Country superimposed on modern administrative boundaries The Petun (from ), also known as the Tobacco people or Tionontati (Dionnontate, Etionontate, Etionnontateronnon, Tuinontatek, Dionondadie, or Khionotaterrhonon) ("The people of the place where the mountain stands"), were an indigenous Iroquoian people of the woodlands of eastern North America. Their traditional homeland was south of Lake Huron's Georgian Bay, in what is today's Canadian province of Ontario.

The Petun were closely related to the Wendat, or Huron. Similar to other Iroquoian peoples, they were structured as a confederacy. One of the less numerous Iroquoian peoples when they became known to Europeans, they had eight or nine villages in the early 17th century, and are estimated to have numbered around 8,000 before European contact.