Thomas Isaac is a well-known Indian politician and economist, who served as the Minister for Finance and Coir of the Indian state of Kerala and a central committee member of the Communist Party of India (Marxist). During his tenure as a member of the Kerala State Planning Board, he was in charge of the Peoples Planning in Kerala. He also served as the Finance Minister of Kerala from 2006 to 2011 and 2016 to 2021.