In announcing the decision, the director of the agency, Alessandra Bastos Soares, said emergency authorization aims to speed up a nationwide immunization campaign.
"The authorization of emergency use is a mechanism that can facilitate the availability and use of vaccines against COVID-19, even if they have not been evaluated under the registration screening, as long as they meet the minimum requirements of safety, quality and efficacy," she said.
Brazil has the world's second-highest COVID-19 death toll, after the United States, and the third-largest outbreak, after the United States and India.
As of Wednesday, the country registered 6,728,452 cases of COVID-19 and 178,995 deaths from the disease.