Tiza Mafira is a law and public policy expert specializing in environmental law, waste management, and climate change policy. She holds a Master of Laws from Harvard Law School and a Bachelor of Laws from Universitas Indonesia. Since 2013, she is co-founder and Executive Director of the Indonesia Plastic Bag Diet Movement (Gerakan Indonesia Diet Kantong Plastik), which pushes for less use of plastic bags in Indonesia through regulation and awareness, whose work has been instrumental in influencing 30+ cities in Indonesia to ban plastic bags. In 2018, she received mention as a UN Ocean Hero by United Nations Environment, for her work in successfully advocating for plastic bag bans in a number of cities across Indonesia. In 2019 the organization received the Mental Revolution award from the Government of Indonesia, and in 2020 Tiza received the Gen.T award given to 400 future leaders of Asia. She is one of the activists featured in the global documentary released in 2019, The Story of Plastic.
Tiza also leads Climate Policy Initiative Indonesia, a non-profit think tank and advisory organization focused on public policy related to land use and energy transitions. Prior to this she worked for six years as a corporate attorney in Jakarta-based law firm, Makarim & Taira S., where she specialized in natural resources and forestry law.