Frank is a former settlement in Humboldt County, California. It was located 6 east-northeast of Shelter Cove. near the intersection of Shelter Cove Road and Chemise Mountain Road, about 1/10 of a mile south on Chemise Mountain Road on the east side of the road.
A post office operated at Frank from 1892 to 1903 and was located inside the McKee home. The name honored Frank H. McKee, Sr., its first postmaster. Frank McKee and his wife Arabelle "Belle" also ran a school from their home.
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 141. ISBN 1-884995-14-4.