Klooga is a small borough (Estonian: alevik) in Keila Parish in Harju County in northern Estonia. It has a population of 1,029 (as of 1 January 2004).
During the German occupation in World War II a Nazi labor camp was situated there.
Nowadays a big area of the settlement is covered by Estonian Defence Forces' military training field Klooga training area.
Klooga has a station on the Elektriraudtee rail line.