Mark Randall Frerichs (born July 13, 1962) is an American civil engineer and former US Navy diver who disappeared in Afghanistan in January 2020 and was later confirmed to be captured by the Haqqani network, a group closely aligned with the Taliban. In September 2022, Frerichs was released by the Taliban-led government of the Islamic Emirate of Afghanistan in exchange for Bashir Noorzai.