"Honestino Guimarães" National Museum, Contemporary art museum at Esplanada dos Ministérios, Brasília, Brazil.

Honestino Guimarães National Museum is a contemporary art museum on the Esplanada dos Ministérios featuring a white dome structure designed by Oscar Niemeyer. The building displays rotating exhibitions of Brazilian artworks and historical documents in its modernist spaces.

The museum opened in 2006 and was established to document and present Brazilian artistic and cultural development. It became part of Brasília's institutional infrastructure for preserving and showcasing the nation's creative output.

The museum is named after Honestino Guimarães, a geology student at the University of Brasília and student-movement leader who was arrested several times and disappeared politically on 10 October 1973. Its opening exhibition in 2006 was dedicated to Niemeyer's work, and in 2016 it hosted Salvatore Garau's "Carte e Tele, 1993/2015".

The museum sits in the Setor Cultural Sul, Lote 2, on the Esplanada dos Ministérios, between the Plano Piloto bus station and the Metropolitan Cathedral. It opens Monday to Sunday, with varying hours. Guided tours require prior scheduling, and the exhibition rooms have Braille signage.

The building functions alongside the Leonel de Moura Brizola National Library, creating a shared space where art and research resources meet. This arrangement allows visitors to move between creative exhibitions and research materials in one area.