A liquid ejecting head according to the present invention comprises a passage unit and an actuator unit. The passage unit includes a first opening and a plurality of second openings. One end of a dummy passage extends from and is connected to one or more third openings formed within a fix area of the actuator unit on a surface of a first plate, and an other end of the dummy passage is connected to one or more fourth openings formed on a surface of any of plates, via a space formed in a plate other than the first plate. The dummy passage is opened to the atmosphere through the one or more fourth openings.