Cedar Island may refer to:
Canada Cedar Island (Kingsville), in Kingsville, Ontario Cedar Island (Niagara River), in Niagara Falls, Ontario
United States Cedar Island (Alaska) Cedar Island (Clinton, Connecticut), a former island, now a peninsula Cedar Island Wildlife Management Area, Maryland Cedar Island (Dukes County, Massachusetts) Cedar Island, in Cass Lake Cedar Island, half of which is in Cedar Island State Park, New York Cedar Island, North Carolina, an island and an unincorporated community Cedar Island National Wildlife Refuge, near the island Cedar Island (Oregon) Cedar Island, South Carolina