Six Nations of the Grand River First Nation in the context of Brantford, Ontario

In Canada, an Indian band (French: bande indienne), First Nation band (French: bande de la Première Nation) or simply band, is the basic unit of government for those peoples subject to the Indian Act (i.e. status Indians or First Nations). Bands are typically small groups of people: the largest in the country, the Six Nations of the Grand River First Nation had 22,294 members in September 2005, and many have a membership below 100 people. Each First Nation is typically represented by a band council (French: conseil de bande) chaired by an elected chief, and sometimes also a hereditary chief. As of 2013, there were 614 bands in Canada. Membership in a band is controlled in one of two ways: for most bands, membership is obtained by becoming listed on the Indian Register maintained by the government. As of 2013, there were 253 First Nations which had their own membership criteria, so that not all status Indians are members of a band.

Bands can be united into larger regional groupings called tribal councils. A treaty council, or treaty association, has additional meaning and historically in most provinces represents signatory bands of treaty areas. British Columbia is an exception as treaties in most of the province have not been completed. There the treaty councils have been formed in order to negotiate future treaty claims. Another emerging type of organization in British Columbia is the chiefs' council, such as the St'át'timc Chiefs Council. These councils unite bands that are not included in tribal councils with those that are in tribal councils.

The Seneca (/ˈsɛnɪkə/ SEN-ik-ə; Seneca: Onöndowa'ga:' (O-non-dowa-gah), lit. 'Great Hill People') are a group of Indigenous Iroquoian-speaking people who historically lived south of Lake Ontario, one of the five Great Lakes in North America. Their nation was the farthest to the west within the Six Nations or Iroquois League (Haudenosaunee) in New York before the American Revolution. For this reason, they are called "The Keepers of the Western Door."

In the 21st century, more than 10,000 Seneca live in the United States, which has three federally recognized Seneca tribes. Two of them are centered in New York: the Seneca Nation of Indians, with five territories in western New York near Buffalo; and the Tonawanda Seneca Nation. The Seneca-Cayuga Nation is in Oklahoma, where their ancestors were relocated from Ohio during the Indian Removal. Approximately 1,000 Seneca live in Canada, near Brantford, Ontario, at the Six Nations of the Grand River First Nation. They are descendants of Seneca who resettled there after the American Revolution, as they had been allies of the British and forced to cede much of their lands.