Tanglewilde is a census-designated place in Thurston County, Washington, United States, part of the Urban Growth Area of the city of Lacey. The community is surrounded by the city of Lacey and borders Mushroom Corner. The sections of Tanglewilde and Thompson Place are divided south and north, respectively, by Martin Way. Interstate 5 forms the northern border of the CDP, and Washington State Route 510 partially forms the eastern limits.