Timberline High School is a comprehensive public secondary school in Lacey, Washington. Opened in 1970 and part of North Thurston Public Schools, its school colors are green and gold and the mascot is a blazer.

Lacey is a city in Thurston County, Washington, United States. It is a suburb of Olympia with a population of 53,526 at the 2020 census, making it the 24th most populous city in Washington. Lacey is located along Interstate 5 between Olympia and the Nisqually River, which marks the border with Pierce County and Joint Base Lewis–McChord.