Tree Island may refer to: Tree Island, South China Sea, Hainan, People's Republic of China Tree Island, Queensland, Australia Tree Island (British Columbia), an island in the lower Fraser River, British Columbia Tree Island is a local name for Sandy Island, the core island of Sandy Island Marine Provincial Park, Canada Tree Island (novel), by Linda Grover Tree Island, also known as Pak Chau, Tuen Mun District, New Territories, Hong Kong Tree island, a variety of tropical hardwood hammock found in the Florida Everglades