Niterói circus fire: Fire breaks out during a performance by the Gran Circus Norte-Americano in the city of Niterói, Rio de Janeiro, Brazil, killing more than 500.

The Niterói circus fire occurred on December 17, 1961 in the city of Niterói, Brazil. A fire in the tent housing a sold-out performance by the Gran Circus Norte-Americano caused more than 500 deaths. It is the worst fire disaster to occur in Brazil.