The Brazilian Physical Society (Portuguese: Sociedade Brasileira de Física, SBF) is a civil association formed by physicists in Brazil. Founded on July 14, 1966, the SBF is headquartered in the city of São Paulo. Its first president was Oscar Sala.
The SBF was created during the XVIII Annual Meeting of the Sociedade Brasileira para o Progresso da Ciência (SBPC) -- Society for the Advancement of Science—held in Blumenau, Santa Catarina, Brazil. The act of founding happened on July 14, 1966 in the hall of the Municipal Library Fritz Muller. The participants of this meeting, among them researchers, school teachers and students of physics, were summoned individual by letter sent to all members of the physical sector of SBPC.