Käru is a small borough in Rapla County, Estonia. It is the administrative centre of Käru Parish.
Käru has a station on the Edelaraudtee's western route.
Käru may refer to several places in Estonia:
- Käru Parish, municipality in Rapla County
- Käru, small borough in Käru Parish, Rapla County
- Käru, Lääne-Viru County, village in Väike-Maarja Parish, Lääne-Viru County
- Käru, Pärnu County, village in Varbla Parish, Pärnu County