Addington is a former settlement in Lassen County, California. It was located 15 miles (24 km) southeast of Hayden Hill.
A post office operated at Addington from 1890 to 1894, and from 1908 to 1910. The name honored Joseph and Jess Addington, local farmers.
- ^ a b c d Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 384. ISBN 1-884995-14-4.
Coordinates: 40°51′N 121°05′W / 40.85°N 121.08°W