Tammiku is a village in Haapsalu municipality, Lääne County, in western Estonia.

[1] Prior to the 2017 administrative reform of local governments, it was located in Ridala Parish.

Tammiku appears in written records in the 17th century as Tammeck, referring to a meadow in the area.

The name (in the genitive case) comes from the common noun tammik 'oak forest', referring to the local vegetation.

This Lääne County location article is a stub.