Abstract: An adjustable arm rest device for chairs includes a lower arm rest, an upper arm rest connected to the lower arm rest by an intermediate member and adjustable to a selected angular orientation relative to the arm rest, at least one fastener for removably securing the first and second portions to a frame of the chair in the selected angular orientation, and a leg for supporting the arm rest on a surface. The arm rest device is readily attachable to the frames of chairs, and is adjustable for use with adjustable chairs such as lounge chairs.