Antonio "Tonchi" Tinio is a Filipino activist and member of the House of Representatives (congressman), sitting as representative of ACT Teachers Partylist from the 15th to the 17th (current) Congress, serving as Assistant Minority Floor Leader in the 15th Congress. He was the national chairperson of the Alliance of Concerned Teachers (ACT) from 2002 to 2012. Before his stint in Congress, Tinio was a University of the Philippines (UP) professor from 1991-2010.