The Brazilian Mathematical Olympiad of Public Schools () (OBMEP) is an annual Mathematics contest created in 2005 by the Brazilian Ministério da Ciência e Tecnologia (MCT) and Ministério da Educação (MEC), in collaboration with Instituto Nacional de Matemática Pura e Aplicada (IMPA) and Sociedade Brasileira de Matemática (SBM), to stimulate the mathematics education in Brazil. It is open to public school students from fifth grade to high school. Yearly, around 18 million students are enrolled for its first round.