The New South Wales Office of Environment and Heritage (OEH), a former division of the Government of New South Wales between April 2011 and July 2019, was responsible for the care and protection of the environment and heritage, which includes the natural environment, Aboriginal country, culture and heritage, and built heritage in New South Wales, Australia. The OEH supported the community, business and government in protecting, strengthening and making the most of a healthy environment and economy within the state. The OEH was part of the Department of Planning and Environment cluster and managed national parks and reserves.