Estádio Olímpico Monumental (Monumental Olympic Stadium, in English), also known as Estádio Olímpico de Porto Alegre (Porto Alegre Olympic Stadium) and Estádio Olímpico (Olympic Stadium) until 1980, was a football stadium in the city of Porto Alegre, in the Brazilian state of Rio Grande do Sul, with a maximum capacity of 45,000 people. The stadium was owned by Grêmio Foot-Ball Porto Alegrense.