Six Nations may refer to:
Organizations Political organizations Iroquois, an alliance of Indigenous nations in North America Celtic League, alliance of six Celtic "nations"
Schools Six Nations Polytechnic, third-level college in the reserve
Places Six Nations of the Grand River, First Nations reserve in Canada
Sports Six Nations Championship, an annual European men's rugby union competition 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 men's ice hockey competition ICC Six Nations Challenge, a 2000–2004 men's cricket tournament
See also Six-party talks, worldwide discussions aimed at resolving security concerns related to North Korea’s nuclear weapons program Six Nations land cessions, by Iroquois and Lenape 17th and 18th centuries to British North America Nations Cup (netball), an annual tournament held in Singapore