Window Rock, known in Navajo as Tségháhoodzání (pronounced [tsʰéɰáhòːtsání]), is a city and census-designated place that serves as the capital of the Navajo Nation, the largest Native American tribe by both land and tribal enrollment. The capital lies within the boundaries of the St. Michaels Chapter, adjacent to the Arizona and New Mexico state line. Window Rock is the site of the Navajo Nation governmental campus, which contains the Navajo Nation Council, Navajo Nation Supreme Court, the offices of the Navajo Nation President and Vice President, and many Navajo government buildings.

Window Rock's population was 2,500 at the 2020 census. It is estimated to reach around 20,000 during weekdays when tribal offices are open.^{[citation needed]}

Window Rock's main natural attraction is the window formation of sandstone, after which the community is named. The Navajo Nation Museum, the Navajo Nation Zoological and Botanical Park, and the Navajo Nation Code Talkers World War II memorial are tribal attractions located in Window Rock.

Until 1936, the area was sparsely populated and known by the Navajo only by its ceremonial name Niʼ Ałníiʼgi ("Center of the World"). John Collier, a reforming Commissioner of Indian Affairs, chose this site to establish the seat of the Navajo Central Agency, the Bureau of Indian Affairs official connection to the nation. His proposal to make the ceremonial name the official name met with resistance, and Navajos soon ridiculed it as "ni ałnííʼgóó" (~ "into your middle (parts)").

Due to this, the BIA chose the name of the major local landmark, the rock-with-hole-through-it (Navajo: tségháhoodzání) for this Indian agency site. It was rendered in English as Window Rock. This landmark is north of the Navajo governmental administration buildings. It is important in the traditional Navajo Water Way Ceremony (Tóee), as one of the four places where Navajo medicine men go with their traditional woven water jugs to get water for the ceremony that is held to pray for an abundance of rainfall.

Window Rock is the capital of the Navajo Nation's government. Its complex houses the Navajo Nation President and Vice President, Navajo Nation Supreme Court, the 24-member Navajo Nation Council, and Navajo government administration buildings. As a district within the St. Michaels Chapter, Window Rock is served by a Navajo Council Delegate and Chapter President and Vice President.

As of the census of 2000, there were 3,059 people, 876 households, and 713 families residing in the CDP. The population density was 589.3 inhabitants per square mile (227.5/km²). There were 998 housing units at an average density of 192.3 per square mile (74.2/km²). The racial makeup of the CDP was 95.5% Native American, 3.2% White, 0.4% Asian, 0.2% African American, <0.1% Pacific Islander, 0.1% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 1.4% of the population.

There were 876 households, out of which 51.0% had children under the age of 18 living with them, 43.7% were married couples living together, 29.7% had a female householder with no husband present, and 18.6% were non-families. 15.6% of all households were made up of individuals, and 2.4% had someone living alone who was 65 years of age or older. The average household size was 3.42 and the average family size was 3.81.