Mark Aguilar Villar (Tagalog pronunciation: [ˈviʎar], born August 14, 1978) is a Filipino politician and businessman serving as a Senator since 2022. He served in President Rodrigo Duterte's cabinet as the Secretary of Public Works and Highways from 2016 to 2021, and was the COVID-19 pandemic isolation czar from 2020 to 2021. A member of the Nacionalista Party, he was the Representative of Las Piñas from 2010 to 2016. Villar has also previously held executive positions in his family's businesses.