The Instituto de Odivelas (IO) was a Portuguese military school for young girls, located at Odivelas. It was founded in 1900 and closed in 2015. The last official full name of the school was Instituto de Odivelas (Infante Dom Afonso) (Portuguese for "Institute of Odivelas (Prince Alfonse)").
Initially, it was named Instituto Infante Dom Afonso (Prince Alfonse Institute). In 1910, it was renamed Instituto Torre e Espada (Tower and Sword Institute) and, in 1911, Instituto Feminino de Educação e Trabalho (Feminine Institute of Education and Labor). In 1942, it became the Instituto de Odivelas and, in 1988, the last name was adopted.
In a controversial decision taken in 2013, the Minister of National Defense José Pedro Aguiar-Branco ordered in the closing of the IO in the end of the school year of 2014/2015. Their students are being integrated in the Military College, which was transformed from a boys' school into a mixed gender school. This decision is being opposed by the former students and parents organizations of both schools.
