Matthew Mazzocco (born 1983) was an American loan officer and far-right insurrectionist from San Antonio, Texas who participated in the 2021 United States coup d'etat attempt in Washington DC. He worked for Synergy One Lending until he was fired for his role in the storming of the Capitol on 6 January 2021, during which he made a Facebook post declaring "The capital is ours!" He was arrested on 20 January 2021.