An electromechanical element includes a mechanically movable element through a hollow formed on a substrate, and a plurality of holes formed in the movable element. In the electromechanical element, the plurality of holes are arranged such that at least two holes are in a same line, at least one hole is in another line located adjacent to the one line with at least two holes, and a distance between one of the holes arranged in the same line and the other hole located at the closest position from the one of the two holes arranged in the same line is longer than a distance between the holes adjacently arranged in the same line.