Augusto Boal was a Brazilian theatre practitioner, drama theorist, and political activist. He was the founder of Theatre of the Oppressed, a theatrical form originally used in radical left popular education movements. Boal served one term as a Vereador in Rio de Janeiro from 1993 to 1997, where he developed legislative theatre.

The Theatre of the Oppressed (TO) describes theatrical forms that the Brazilian theatre practitioner Augusto Boal first elaborated in the 1970s, initially in Brazil and later in Europe. Boal was influenced by the work of the educator and theorist Paulo Freire and his book Pedagogy of the Oppressed. Boal's techniques use theatre as means of promoting social and political change in alignment originally with radical-left politics and later with centre-left ideology. In the Theatre of the Oppressed, the audience becomes active, such that as "spect-actors" they explore, show, analyse and transform the reality in which they are living.