Armasan dos Buzios (port. Armação dos Búzios) - a municipality in Brazil, part of the state of Rio de Janeiro. It is an integral part of the Baixadas-Litoraneas Mesoregion. It is included in the economic and statistical micro-region of Lagus. The population is 23,874 people in 2006. It covers an area of 69,287km². Population density is 344.6 people. / Km².