Firmino da Silveira Soares Filho (16 December 1963 – 6 April 2021) was a Brazilian economist and politician.

Subsequently, he worked for the Tribunal de Contas da União and as a professor for the Federal University of Piauí.

Filho began his political career at the age of 30 in 1993, when he was appointed by Mayor of Teresina Raimundo Wall Ferraz to become Municipal Secretary of Finance.

It was recognized as a great success by Caixa Econômica Federal, which recommended the practice to the United Nations in a 2000 conference in China.

On 6 April 2021, Firmino Filho was found dead in Teresina, where he reportedly fell from the 14th floor of the Manhattan River Center, the location of his office with the Tribunal de Contas da União.