Mark Kaniela Saito Ing (born December 24, 1988) is an American politician and community organizer who was a member of the Hawaii House of Representatives from the 11th District, representing south Maui from November 7, 2012 until November 6, 2018. He unsuccessfully ran to represent Hawaii's 1st District in the U.S. House of Representatives in the 2018 federal election. Ing currently serves as Climate Justice Director for People’s Action where he leads national campaigns to combat climate change. He serves on various coalitions including the Green New Deal Network, the United National Frontline Table, Climate Power Advisory Board, and the Hawai’i Community Bail Fund’s board of directors.