Six Nations

Six Nations may refer to:

People

 * Iroquois Confederacy, a group of First Nations/Native American peoples: Mohawk, Oneida, Onondaga, Cayuga, Seneca, and Tuscarora
 * Six Nations land cessions, in the late 17th and 18th centuries to British North America
 * Six Nations of the Grand River, First Nations reserve in Canada
 * Six Nations Polytechnic, third-level college in the reserve
 * Celtic League, alliance of six "Celtic nations" (Ireland, Scotland, Wales, Brittany, Cornwall, Isle of Man)

Sports

 * Six Nations Championship, an annual European men's rugby union competition involving England, Scotland, Wales, Ireland, France, and Italy
 * Six Nations Under 20s Championship, under-20 men's equivalent
 * Women's Six Nations Championship, women's equivalent
 * Six Nations Tournament (ice hockey), a 1994–1996 European competition for men's ice hockey clubs from Italy, Austria, France, Slovenia, Netherlands, and Denmark
 * ICC Six Nations Challenge, a 2000–2004 men's cricket tournament for various teams below Test status.
 * Nations Cup (netball), an annual tournament held in Singapore