Lesbian, gay, bisexual, and transgender (LGBT) people in the Navajo Nation, the largest indigenous sovereign state in the United States, face legal challenges not experienced by non-LGBT residents. Same-sex sexual activity is legal, but same-sex unions are not recognized.
Opposition to homosexuality and gender-fluidity was introduced by Christian missionaries and the US federal government, specifically through the Bureau of Indian Affairs. Currently, the suicide attempt rate for Navajo LGBT youths is three times that of white LGBT youths. Because of the generational change in attitudes, Navajo LGBT youths may face opposition from their parents' generation but find acceptance from their grandparents.
Same-sex unions are now officially banned on the Navajo Nation. The Navajo Nation Council passed the Diné Marriage Act of 2005 with a 67–0–0 vote on Friday.