Abstract: A foot rest that is attachable to a chair ring, chair base, or seat post allows a chair occupant to position his or her legs and feet in an ergonomically superior position. The foot rest includes a foot rest support for placement of the chair occupant's feet and extensions that position the chair foot rest a distance from the chair ring, chair base, or seat post to which the foot ring is attached. The foot rest may include one or more telescoping extensions that allow the position of the foot rest support relative to the chair ring, chair base, or seat post to be adjusted by the chair occupant to maximize comfort or utility.