The Cherokee Nation, formerly known as the Cherokee Nation of Oklahoma, 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, Absentee Shawnee, and Natchez Nation. As of 2023, over 450,000 people were enrolled in the Cherokee Nation.

Cherokee or Tsalagi is an endangered-to-moribund Iroquoian language and the native language of the Cherokee people. Ethnologue states that there were 1,520 Cherokee speakers out of 376,000 Cherokees in 2018, while a tally by the three Cherokee tribes in 2019 recorded about 2,100 speakers. The number of speakers is in decline. The Tahlequah Daily Press reported in 2019 that most speakers are elderly, about eight fluent speakers die each month, and that only 5 people under the age of 50 are fluent. The dialect of Cherokee in Oklahoma is "definitely endangered", and the one in North Carolina is "severely endangered" according to UNESCO. The Lower dialect, formerly spoken on the South Carolina–Georgia border, has been extinct since about 1900. The dire situation regarding the future of the two remaining dialects prompted the Tri-Council of Cherokee tribes to declare a state of emergency in June 2019, with a call to enhance revitalization efforts.