Saku may refer to:
Places Saku, Nagano, a city in Japan Saku, Nagano (Minamisaku), a town in Japan Saku Parish, a rural municipality in Harju County, Estonia Saku, Estonia, a small borough in Saku Parish, Harju County, Estonia Saku Constituency, an electoral constituency in Kenya
Other uses Saku (given name), a masculine Finnish given name and a feminine Japanese given name Saku Brewery, an Estonian brewery "Saku" (song), by Dir En Grey Saku (EP), by Onew