Harrington is a city in Lincoln County, Washington, United States. The population was 429 at the 2020 census. It was named after W.P. Harrington, a banker from Colusa, California, who had heavily invested in local land.

Lincoln County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 10,876, making it the fifth-least populous county in the state. The county seat and largest city is Davenport.