Tree Island

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