List of federally recognized tribes in the context of "Piegan Blackfeet"

The Bureau of Indian Affairs (BIA), also known as Indian Affairs (IA), is a United States federal agency within the Department of the Interior. It is responsible for implementing federal laws and policies related to Native Americans and Alaska Natives, and administering and managing over 55,700,000 acres (225,000 km) of reservations held in trust by the U.S. federal government for indigenous tribes. It renders services to roughly 2 million indigenous Americans across 574 federally recognized tribes. The BIA is governed by a director and overseen by the assistant secretary for Indian affairs, who answers to the secretary of the interior.

The BIA works with tribal governments to help administer law enforcement and justice; promote development in agriculture, infrastructure, and the economy; enhance tribal governance; manage natural resources; and generally advance the quality of life in tribal communities. Educational services are provided by Bureau of Indian Education—the only other agency under the Assistant Secretary for Indian affairs—while health care is the responsibility of the U.S. Department of Health and Human Services through its Indian Health Service.

The Seminole Nation of Oklahoma is a federally recognized Native American tribe based in the U.S. state of Oklahoma. It is the largest of the three federally recognized Seminole governments, which include the Seminole Tribe of Florida and the Miccosukee Tribe of Indians of Florida. Its citizens are descendants of the approximately 3,000 Seminoles who were forcibly removed from Florida to Indian Territory, along with 800 Black Seminoles, after the Second Seminole War. The Seminole Nation of Oklahoma is headquartered in Wewoka within Seminole County, Oklahoma. Of 18,800 enrolled tribal citizens, 13,533 live in Oklahoma. The tribe began to revive its government in 1936 under the Indian Reorganization Act. While its reservation was originally larger, today the tribal reservation and jurisdictional area covers Seminole County, Oklahoma, within which it has a variety of properties.

The few hundred Seminoles remaining in Florida fought against US forces in the Third Seminole war, and peace was made without their defeat. Today, descendants of those people have formed two federally recognized tribes. Together, the three tribes and unorganized Traditionals in Florida were awarded a land claims settlement valued in total at $16 million in 1976, for nearly 24 million acres of lands seized by the United States government in Florida in 1823; amounting to roughly $0.67 an acre.

The Seminole Tribe of Florida is a federally recognized Seminole tribe based in the U.S. state of Florida. Together with the Seminole Nation of Oklahoma and the Miccosukee Tribe of Indians of Florida, it is one of three federally recognized Seminole entities. It received that status in 1957. Today, it has six Indian reservations in Florida.

The Florida Seminole, along with the Miccosukee, speak the Mikasuki language, also spelled Miccosukee. The language has been referred to as a descendant of Hitchiti, a dialect of Hitchiti, and another term for Hitchiti. Additionally, some Florida Seminole communities speak a dialect of the Mvskoke language called Florida Seminole Creek.

The Cherokee Nation (Cherokee: ᏣᎳᎩᎯ ᎠᏰᎵ Tsalagihi Ayeli or ᏣᎳᎩᏰᎵ Tsalagiyehli) is the largest of three federally recognized tribes of Cherokees in the United States. It includes people descended from members of the Old Cherokee Nation who relocated, due to increasing pressure, from the Southeast to Indian Territory and Cherokees who were forced to relocate on the Trail of Tears. The tribe also includes descendants of Cherokee Freedmen and Natchez Nation. As of 2024, over 466,000 people were enrolled in the Cherokee Nation.

Headquartered in Tahlequah, Oklahoma, the Cherokee Nation has a reservation spanning 14 counties in the northeastern corner of Oklahoma. These are Adair, Cherokee, Craig, Delaware, Mayes, McIntosh, Muskogee, Nowata, Ottawa, Rogers, Sequoyah, Tulsa, Wagoner, and Washington counties.

The Northern Cheyenne Tribe of the Northern Cheyenne Indian Reservation (Cheyenne: Tsėhéstáno) is the federally recognized Northern Cheyenne tribe and a Plains tribe.

The Northern Cheyenne Indian Reservation is reservation located in southeastern Montana, that is approximately 690 square miles (1,800 km) large. It is home to approximately 6,000 Cheyenne people. The reservation is bounded on the east by the Tongue River and on the west by the Crow Reservation. There are small parcels of non-contiguous off-reservation trust lands in Meade County, South Dakota, northeast of the city of Sturgis. Its timbered ridges that extend into northwestern South Dakota are part of Custer National Forest and it is approximately 40 miles (64 km) east of the site of the 1876 Battle of the Little Bighorn.

The Muscogee Nation, or Muscogee (Creek) Nation, is a federally recognized Native American tribe based in the U.S. state of Oklahoma. The nation descends from the historic Muscogee Confederacy, a large group of indigenous peoples of the Southeastern Woodlands. They commonly refer to themselves as Este Mvskokvlke (pronounced [isti məskóɡəlɡi]). Historically, they were often referred to by European Americans as one of the Five Civilized Tribes of the American Southeast.

The Muscogee Nation is the largest of the federally recognized Muscogee tribes. The Muskogean-speaking Alabama, Koasati, Hitchiti, and Natchez people are also enrolled in this nation. Algonquian-speaking Shawnee and Yuchi (language isolate) are also enrolled in the Muscogee Nation, although historically, the latter two groups were from different language families and cultures than the Muscogee.

The Supreme Court decision in Obergefell v. Hodges that legalized same-sex marriage in the states and most territories did not apply on Indian reservations. The decision was based on the equal protection guarantee of the 14th Amendment to the U.S. Constitution, but by long established law, this part of the Constitution does not apply to Indian tribes. Therefore, the individual laws of the various United States federally recognized Native American tribes may set limits on same-sex marriage under their jurisdictions. At least ten reservations specifically prohibit same-sex marriage and do not recognize same-sex marriages performed in other jurisdictions; these reservations remain the only parts of the United States to enforce explicit bans on same-sex couples marrying.

Most federally recognized tribal nations have their own courts and legal codes but do not have separate marriage laws or licensing, relying instead on state law. A few do not have their own courts, relying instead on CFR courts under the Bureau of Indian Affairs. In such cases, same-sex marriage is legal under federal law. Of those that do have their own legislation, most have no special regulation for marriages between people of the same sex or gender, and most accept as valid marriages performed in other jurisdictions. Many Native American belief systems include the two-spirit descriptor for gender variant individuals and accept two-spirited individuals as valid members of their communities, though such traditional values are seldom reflected explicitly in the legal code. Same-sex marriage is possible on at least forty-nine reservations with their own marriage laws, beginning with the Coquille Indian Tribe (Oregon) in 2009. Marriages performed on these reservations were first recognized by the federal government in 2013 after section 3 of the Defense of Marriage Act (DOMA) was declared unconstitutional in United States v. Windsor. These were statutorily affirmed by the Respect for Marriage Act, which formally repealed DOMA.

The Penobscot (Abenaki: Pαnawάhpskewi) are an Indigenous people in North America from the Northeastern Woodlands region. They are organized as a federally recognized tribe in Maine.

The Penobscot Nation, formerly known as the Penobscot Tribe of Maine, is the federally recognized tribe of Penobscot in the United States. They are part of the Wabanaki Confederacy, along with the Abenaki, Passamaquoddy, Wolastoqiyik, and Miꞌkmaq nations, all of whom historically spoke Algonquian languages. The Penobscots' main settlement is now the Penobscot Indian Island Reservation, located within the state of Maine along the Penobscot River.