Ceilândia is an administrative region located in the Federal District of Brazil. It is bordered by Brazlândia to the north, Taguatinga to the east, and Samambaia and Sol Nascente/Por do Sol to the south. With a population of approximately 398,374 inhabitants, it serves as the most populous administrative region within the Federal District.
The region was created in 1971 by Hélio Prates da Silveira. It originated from a 1969 campaign known as "CEI," which was established to combat irregular settlements near the capital city of Brasília.